Finding the Fourth Proportional to 2,654.31, 3,650.77 and 2,129.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.31 : 3,650.77 = 2,129.19 : x
2. Step 2: Convert to fraction form
   2,654.31/3,650.77 = 2,129.19/x
3. Step 3: Cross multiply
   2,654.31x = 3,650.77 × 2,129.19
4. Step 4: Simplify right side
   2,654.31x = 7,773,182.98
5. Step 5: Solve for x
   x = 7,773,182.98/2,654.31
6. Step 6: Final answer
   x = 2,928.51