Finding the Fourth Proportional to 4,719.60, 7,079.10 and 1,432.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,719.60 : 7,079.10 = 1,432.72 : x
2. Step 2: Convert to fraction form
   4,719.60/7,079.10 = 1,432.72/x
3. Step 3: Cross multiply
   4,719.60x = 7,079.10 × 1,432.72
4. Step 4: Simplify right side
   4,719.60x = 10,142,371.63
5. Step 5: Solve for x
   x = 10,142,371.63/4,719.60
6. Step 6: Final answer
   x = 2,148.99