Finding the Fourth Proportional to 2,438.59, 3,663.89 and 1,561.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,438.59 : 3,663.89 = 1,561.47 : x
2. Step 2: Convert to fraction form
   2,438.59/3,663.89 = 1,561.47/x
3. Step 3: Cross multiply
   2,438.59x = 3,663.89 × 1,561.47
4. Step 4: Simplify right side
   2,438.59x = 5,721,058.22
5. Step 5: Solve for x
   x = 5,721,058.22/2,438.59
6. Step 6: Final answer
   x = 2,346.05