Finding the Fourth Proportional to 897,978.62, 1,240,560.02 and 588,615.51

Step by Step Solution

1. Step 1: Write the proportion equation
   897,978.62 : 1,240,560.02 = 588,615.51 : x
2. Step 2: Convert to fraction form
   897,978.62/1,240,560.02 = 588,615.51/x
3. Step 3: Cross multiply
   897,978.62x = 1,240,560.02 × 588,615.51
4. Step 4: Simplify right side
   897,978.62x = 730,212,868,857.91
5. Step 5: Solve for x
   x = 730,212,868,857.91/897,978.62
6. Step 6: Final answer
   x = 813,174.00