Finding the Fourth Proportional to 1,298,472,631.98, 1,943,111,267.01 and 807,417,143.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298,472,631.98 : 1,943,111,267.01 = 807,417,143.34 : x
2. Step 2: Convert to fraction form
   1,298,472,631.98/1,943,111,267.01 = 807,417,143.34/x
3. Step 3: Cross multiply
   1,298,472,631.98x = 1,943,111,267.01 × 807,417,143.34
4. Step 4: Simplify right side
   1,298,472,631.98x = 1,568,901,348,400,982,272
5. Step 5: Solve for x
   x = 1,568,901,348,400,982,272/1,298,472,631.98
6. Step 6: Final answer
   x = 1,208,266,781.88