Finding the Fourth Proportional to 1,050.66, 1,448.82 and 718.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.66 : 1,448.82 = 718.86 : x
2. Step 2: Convert to fraction form
   1,050.66/1,448.82 = 718.86/x
3. Step 3: Cross multiply
   1,050.66x = 1,448.82 × 718.86
4. Step 4: Simplify right side
   1,050.66x = 1,041,498.75
5. Step 5: Solve for x
   x = 1,041,498.75/1,050.66
6. Step 6: Final answer
   x = 991.28