Finding the Fourth Proportional to 1,444.28, 1,992.57 and 947.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.28 : 1,992.57 = 947.19 : x
2. Step 2: Convert to fraction form
   1,444.28/1,992.57 = 947.19/x
3. Step 3: Cross multiply
   1,444.28x = 1,992.57 × 947.19
4. Step 4: Simplify right side
   1,444.28x = 1,887,338.83
5. Step 5: Solve for x
   x = 1,887,338.83/1,444.28
6. Step 6: Final answer
   x = 1,306.77