Finding the Fourth Proportional to 1,655.47, 2,284.61 and 947.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.47 : 2,284.61 = 947.42 : x
2. Step 2: Convert to fraction form
   1,655.47/2,284.61 = 947.42/x
3. Step 3: Cross multiply
   1,655.47x = 2,284.61 × 947.42
4. Step 4: Simplify right side
   1,655.47x = 2,164,480.47
5. Step 5: Solve for x
   x = 2,164,480.47/1,655.47
6. Step 6: Final answer
   x = 1,307.48