Finding the Fourth Proportional to 2,031.32, 2,802.72 and 1,147.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.32 : 2,802.72 = 1,147.16 : x
2. Step 2: Convert to fraction form
   2,031.32/2,802.72 = 1,147.16/x
3. Step 3: Cross multiply
   2,031.32x = 2,802.72 × 1,147.16
4. Step 4: Simplify right side
   2,031.32x = 3,215,168.28
5. Step 5: Solve for x
   x = 3,215,168.28/2,031.32
6. Step 6: Final answer
   x = 1,582.80