Finding the Fourth Proportional to 1,655.31, 2,284.82 and 947.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.31 : 2,284.82 = 947.57 : x
2. Step 2: Convert to fraction form
   1,655.31/2,284.82 = 947.57/x
3. Step 3: Cross multiply
   1,655.31x = 2,284.82 × 947.57
4. Step 4: Simplify right side
   1,655.31x = 2,165,014.28
5. Step 5: Solve for x
   x = 2,165,014.28/1,655.31
6. Step 6: Final answer
   x = 1,307.92