Finding the Fourth Proportional to 911,510.10, 1,257,957.42 and 503,647.56

Step by Step Solution

1. Step 1: Write the proportion equation
   911,510.10 : 1,257,957.42 = 503,647.56 : x
2. Step 2: Convert to fraction form
   911,510.10/1,257,957.42 = 503,647.56/x
3. Step 3: Cross multiply
   911,510.10x = 1,257,957.42 × 503,647.56
4. Step 4: Simplify right side
   911,510.10x = 633,567,185,166.90
5. Step 5: Solve for x
   x = 633,567,185,166.90/911,510.10
6. Step 6: Final answer
   x = 695,074.23