Finding the Fourth Proportional to 2,699.78, 3,725.42 and 1,521.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,699.78 : 3,725.42 = 1,521.06 : x
2. Step 2: Convert to fraction form
   2,699.78/3,725.42 = 1,521.06/x
3. Step 3: Cross multiply
   2,699.78x = 3,725.42 × 1,521.06
4. Step 4: Simplify right side
   2,699.78x = 5,666,587.35
5. Step 5: Solve for x
   x = 5,666,587.35/2,699.78
6. Step 6: Final answer
   x = 2,098.91