Finding the Fourth Proportional to 2,699.80, 3,725.71 and 1,521.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,699.80 : 3,725.71 = 1,521.25 : x
2. Step 2: Convert to fraction form
   2,699.80/3,725.71 = 1,521.25/x
3. Step 3: Cross multiply
   2,699.80x = 3,725.71 × 1,521.25
4. Step 4: Simplify right side
   2,699.80x = 5,667,747.55
5. Step 5: Solve for x
   x = 5,667,747.55/2,699.80
6. Step 6: Final answer
   x = 2,099.32