Finding the Fourth Proportional to 2,264.78, 3,397.28 and 621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,264.78 : 3,397.28 = 621.50 : x
2. Step 2: Convert to fraction form
   2,264.78/3,397.28 = 621.50/x
3. Step 3: Cross multiply
   2,264.78x = 3,397.28 × 621.50
4. Step 4: Simplify right side
   2,264.78x = 2,111,389.43
5. Step 5: Solve for x
   x = 2,111,389.43/2,264.78
6. Step 6: Final answer
   x = 932.27