Finding the Fourth Proportional to 2,801.76, 4,200.51 and 1,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.76 : 4,200.51 = 1,339.50 : x
2. Step 2: Convert to fraction form
   2,801.76/4,200.51 = 1,339.50/x
3. Step 3: Cross multiply
   2,801.76x = 4,200.51 × 1,339.50
4. Step 4: Simplify right side
   2,801.76x = 5,626,583.15
5. Step 5: Solve for x
   x = 5,626,583.15/2,801.76
6. Step 6: Final answer
   x = 2,008.23