Finding the Fourth Proportional to 2,507.20, 3,761.52 and 947.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.20 : 3,761.52 = 947.68 : x
2. Step 2: Convert to fraction form
   2,507.20/3,761.52 = 947.68/x
3. Step 3: Cross multiply
   2,507.20x = 3,761.52 × 947.68
4. Step 4: Simplify right side
   2,507.20x = 3,564,717.27
5. Step 5: Solve for x
   x = 3,564,717.27/2,507.20
6. Step 6: Final answer
   x = 1,421.79