Finding the Fourth Proportional to 2,879.74, 4,320.69 and 1,148.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,879.74 : 4,320.69 = 1,148.50 : x
2. Step 2: Convert to fraction form
   2,879.74/4,320.69 = 1,148.50/x
3. Step 3: Cross multiply
   2,879.74x = 4,320.69 × 1,148.50
4. Step 4: Simplify right side
   2,879.74x = 4,962,312.47
5. Step 5: Solve for x
   x = 4,962,312.47/2,879.74
6. Step 6: Final answer
   x = 1,723.18