Finding the Fourth Proportional to 1,444.52, 1,992.90 and 947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.52 : 1,992.90 = 947.72 : x
2. Step 2: Convert to fraction form
   1,444.52/1,992.90 = 947.72/x
3. Step 3: Cross multiply
   1,444.52x = 1,992.90 × 947.72
4. Step 4: Simplify right side
   1,444.52x = 1,888,711.19
5. Step 5: Solve for x
   x = 1,888,711.19/1,444.52
6. Step 6: Final answer
   x = 1,307.50