Finding the Fourth Proportional to 1,013,870.28, 1,399,096.96 and 561,134.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013,870.28 : 1,399,096.96 = 561,134.28 : x
2. Step 2: Convert to fraction form
   1,013,870.28/1,399,096.96 = 561,134.28/x
3. Step 3: Cross multiply
   1,013,870.28x = 1,399,096.96 × 561,134.28
4. Step 4: Simplify right side
   1,013,870.28x = 785,081,265,299.79
5. Step 5: Solve for x
   x = 785,081,265,299.79/1,013,870.28
6. Step 6: Final answer
   x = 774,340.94