Finding the Fourth Proportional to 1,050.46, 1,449.61 and 578.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.46 : 1,449.61 = 578.37 : x
2. Step 2: Convert to fraction form
   1,050.46/1,449.61 = 578.37/x
3. Step 3: Cross multiply
   1,050.46x = 1,449.61 × 578.37
4. Step 4: Simplify right side
   1,050.46x = 838,410.94
5. Step 5: Solve for x
   x = 838,410.94/1,050.46
6. Step 6: Final answer
   x = 798.14