Finding the Fourth Proportional to 1,655.72, 2,476.20 and 1,240.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.72 : 2,476.20 = 1,240.28 : x
2. Step 2: Convert to fraction form
   1,655.72/2,476.20 = 1,240.28/x
3. Step 3: Cross multiply
   1,655.72x = 2,476.20 × 1,240.28
4. Step 4: Simplify right side
   1,655.72x = 3,071,181.34
5. Step 5: Solve for x
   x = 3,071,181.34/1,655.72
6. Step 6: Final answer
   x = 1,854.89