Finding the Fourth Proportional to 2,608.57, 3,599.80 and 1,429.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.57 : 3,599.80 = 1,429.63 : x
2. Step 2: Convert to fraction form
   2,608.57/3,599.80 = 1,429.63/x
3. Step 3: Cross multiply
   2,608.57x = 3,599.80 × 1,429.63
4. Step 4: Simplify right side
   2,608.57x = 5,146,393.77
5. Step 5: Solve for x
   x = 5,146,393.77/2,608.57
6. Step 6: Final answer
   x = 1,972.88