Finding the Fourth Proportional to 1,016,890.38, 1,403,304.84 and 558,012.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016,890.38 : 1,403,304.84 = 558,012.62 : x
2. Step 2: Convert to fraction form
   1,016,890.38/1,403,304.84 = 558,012.62/x
3. Step 3: Cross multiply
   1,016,890.38x = 1,403,304.84 × 558,012.62
4. Step 4: Simplify right side
   1,016,890.38x = 783,061,803,410.56
5. Step 5: Solve for x
   x = 783,061,803,410.56/1,016,890.38
6. Step 6: Final answer
   x = 770,055.28