Finding the Fourth Proportional to 1,074,636.52, 1,610,626.17 and 542,309.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074,636.52 : 1,610,626.17 = 542,309.78 : x
2. Step 2: Convert to fraction form
   1,074,636.52/1,610,626.17 = 542,309.78/x
3. Step 3: Cross multiply
   1,074,636.52x = 1,610,626.17 × 542,309.78
4. Step 4: Simplify right side
   1,074,636.52x = 873,458,329,975.17
5. Step 5: Solve for x
   x = 873,458,329,975.17/1,074,636.52
6. Step 6: Final answer
   x = 812,794.20