Finding the Fourth Proportional to 1,499.16, 2,248.69 and 621.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.16 : 2,248.69 = 621.42 : x
2. Step 2: Convert to fraction form
   1,499.16/2,248.69 = 621.42/x
3. Step 3: Cross multiply
   1,499.16x = 2,248.69 × 621.42
4. Step 4: Simplify right side
   1,499.16x = 1,397,383.02
5. Step 5: Solve for x
   x = 1,397,383.02/1,499.16
6. Step 6: Final answer
   x = 932.11