Finding the Fourth Proportional to 1,118.83, 1,543.27 and 721.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.83 : 1,543.27 = 721.01 : x
2. Step 2: Convert to fraction form
   1,118.83/1,543.27 = 721.01/x
3. Step 3: Cross multiply
   1,118.83x = 1,543.27 × 721.01
4. Step 4: Simplify right side
   1,118.83x = 1,112,713.10
5. Step 5: Solve for x
   x = 1,112,713.10/1,118.83
6. Step 6: Final answer
   x = 994.53