Finding the Fourth Proportional to 1,452.42, 2,179.38 and 721.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.42 : 2,179.38 = 721.98 : x
2. Step 2: Convert to fraction form
   1,452.42/2,179.38 = 721.98/x
3. Step 3: Cross multiply
   1,452.42x = 2,179.38 × 721.98
4. Step 4: Simplify right side
   1,452.42x = 1,573,468.77
5. Step 5: Solve for x
   x = 1,573,468.77/1,452.42
6. Step 6: Final answer
   x = 1,083.34