Finding the Fourth Proportional to 1,101,900.82, 1,520,634.41 and 618,456.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101,900.82 : 1,520,634.41 = 618,456.28 : x
2. Step 2: Convert to fraction form
   1,101,900.82/1,520,634.41 = 618,456.28/x
3. Step 3: Cross multiply
   1,101,900.82x = 1,520,634.41 × 618,456.28
4. Step 4: Simplify right side
   1,101,900.82x = 940,445,900,448.60
5. Step 5: Solve for x
   x = 940,445,900,448.60/1,101,900.82
6. Step 6: Final answer
   x = 853,476.00