Finding the Fourth Proportional to 1,291,196.47, 1,781,864.79 and 710,427.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291,196.47 : 1,781,864.79 = 710,427.23 : x
2. Step 2: Convert to fraction form
   1,291,196.47/1,781,864.79 = 710,427.23/x
3. Step 3: Cross multiply
   1,291,196.47x = 1,781,864.79 × 710,427.23
4. Step 4: Simplify right side
   1,291,196.47x = 1,265,885,266,994.23
5. Step 5: Solve for x
   x = 1,265,885,266,994.23/1,291,196.47
6. Step 6: Final answer
   x = 980,397.09