Finding the Fourth Proportional to 2,102.38, 3,152.49 and 947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.38 : 3,152.49 = 947.50 : x
2. Step 2: Convert to fraction form
   2,102.38/3,152.49 = 947.50/x
3. Step 3: Cross multiply
   2,102.38x = 3,152.49 × 947.50
4. Step 4: Simplify right side
   2,102.38x = 2,986,984.28
5. Step 5: Solve for x
   x = 2,986,984.28/2,102.38
6. Step 6: Final answer
   x = 1,420.76