Finding the Fourth Proportional to 1,463.28, 2,191.56 and 948.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,463.28 : 2,191.56 = 948.72 : x
2. Step 2: Convert to fraction form
   1,463.28/2,191.56 = 948.72/x
3. Step 3: Cross multiply
   1,463.28x = 2,191.56 × 948.72
4. Step 4: Simplify right side
   1,463.28x = 2,079,176.80
5. Step 5: Solve for x
   x = 2,079,176.80/1,463.28
6. Step 6: Final answer
   x = 1,420.90