Finding the Fourth Proportional to 1,655.57, 2,284.61 and 909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.57 : 2,284.61 = 909.50 : x
2. Step 2: Convert to fraction form
   1,655.57/2,284.61 = 909.50/x
3. Step 3: Cross multiply
   1,655.57x = 2,284.61 × 909.50
4. Step 4: Simplify right side
   1,655.57x = 2,077,836.82
5. Step 5: Solve for x
   x = 2,077,836.82/1,655.57
6. Step 6: Final answer
   x = 1,255.06