Finding the Fourth Proportional to 3,213.32, 4,818.72 and 1,132.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,213.32 : 4,818.72 = 1,132.88 : x
2. Step 2: Convert to fraction form
   3,213.32/4,818.72 = 1,132.88/x
3. Step 3: Cross multiply
   3,213.32x = 4,818.72 × 1,132.88
4. Step 4: Simplify right side
   3,213.32x = 5,459,031.51
5. Step 5: Solve for x
   x = 5,459,031.51/3,213.32
6. Step 6: Final answer
   x = 1,698.88