Finding the Fourth Proportional to 1,655.31, 2,284.38 and 909.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.31 : 2,284.38 = 909.33 : x
2. Step 2: Convert to fraction form
   1,655.31/2,284.38 = 909.33/x
3. Step 3: Cross multiply
   1,655.31x = 2,284.38 × 909.33
4. Step 4: Simplify right side
   1,655.31x = 2,077,255.27
5. Step 5: Solve for x
   x = 2,077,255.27/1,655.31
6. Step 6: Final answer
   x = 1,254.90