Finding the Fourth Proportional to 1,050.30, 1,449.42 and 578.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.30 : 1,449.42 = 578.18 : x
2. Step 2: Convert to fraction form
   1,050.30/1,449.42 = 578.18/x
3. Step 3: Cross multiply
   1,050.30x = 1,449.42 × 578.18
4. Step 4: Simplify right side
   1,050.30x = 838,025.66
5. Step 5: Solve for x
   x = 838,025.66/1,050.30
6. Step 6: Final answer
   x = 797.89