Finding the Fourth Proportional to 1,050.94, 1,449.30 and 718.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.94 : 1,449.30 = 718.84 : x
2. Step 2: Convert to fraction form
   1,050.94/1,449.30 = 718.84/x
3. Step 3: Cross multiply
   1,050.94x = 1,449.30 × 718.84
4. Step 4: Simplify right side
   1,050.94x = 1,041,814.81
5. Step 5: Solve for x
   x = 1,041,814.81/1,050.94
6. Step 6: Final answer
   x = 991.32