Finding the Fourth Proportional to 919,025.91, 1,268,068.28 and 536,978.79

Step by Step Solution

1. Step 1: Write the proportion equation
   919,025.91 : 1,268,068.28 = 536,978.79 : x
2. Step 2: Convert to fraction form
   919,025.91/1,268,068.28 = 536,978.79/x
3. Step 3: Cross multiply
   919,025.91x = 1,268,068.28 × 536,978.79
4. Step 4: Simplify right side
   919,025.91x = 680,925,767,946.89
5. Step 5: Solve for x
   x = 680,925,767,946.89/919,025.91
6. Step 6: Final answer
   x = 740,921.19