Finding the Fourth Proportional to 911,499.72, 1,257,762.38 and 503,577.24

Step by Step Solution

1. Step 1: Write the proportion equation
   911,499.72 : 1,257,762.38 = 503,577.24 : x
2. Step 2: Convert to fraction form
   911,499.72/1,257,762.38 = 503,577.24/x
3. Step 3: Cross multiply
   911,499.72x = 1,257,762.38 × 503,577.24
4. Step 4: Simplify right side
   911,499.72x = 633,380,505,378.35
5. Step 5: Solve for x
   x = 633,380,505,378.35/911,499.72
6. Step 6: Final answer
   x = 694,877.34