Finding the Fourth Proportional to 1,543.32, 2,129.76 and 844.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.32 : 2,129.76 = 844.72 : x
2. Step 2: Convert to fraction form
   1,543.32/2,129.76 = 844.72/x
3. Step 3: Cross multiply
   1,543.32x = 2,129.76 × 844.72
4. Step 4: Simplify right side
   1,543.32x = 1,799,050.87
5. Step 5: Solve for x
   x = 1,799,050.87/1,543.32
6. Step 6: Final answer
   x = 1,165.70