Finding the Fourth Proportional to 1,012,602.78, 1,397,419.83 and 559,909.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,602.78 : 1,397,419.83 = 559,909.98 : x
2. Step 2: Convert to fraction form
   1,012,602.78/1,397,419.83 = 559,909.98/x
3. Step 3: Cross multiply
   1,012,602.78x = 1,397,419.83 × 559,909.98
4. Step 4: Simplify right side
   1,012,602.78x = 782,429,309,066.90
5. Step 5: Solve for x
   x = 782,429,309,066.90/1,012,602.78
6. Step 6: Final answer
   x = 772,691.25