Finding the Fourth Proportional to 2,445.78, 3,669.48 and 1,521.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.78 : 3,669.48 = 1,521.98 : x
2. Step 2: Convert to fraction form
   2,445.78/3,669.48 = 1,521.98/x
3. Step 3: Cross multiply
   2,445.78x = 3,669.48 × 1,521.98
4. Step 4: Simplify right side
   2,445.78x = 5,584,856.82
5. Step 5: Solve for x
   x = 5,584,856.82/2,445.78
6. Step 6: Final answer
   x = 2,283.47