Finding the Fourth Proportional to 2,402.48, 3,312.42 and 1,561.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.48 : 3,312.42 = 1,561.98 : x
2. Step 2: Convert to fraction form
   2,402.48/3,312.42 = 1,561.98/x
3. Step 3: Cross multiply
   2,402.48x = 3,312.42 × 1,561.98
4. Step 4: Simplify right side
   2,402.48x = 5,173,933.79
5. Step 5: Solve for x
   x = 5,173,933.79/2,402.48
6. Step 6: Final answer
   x = 2,153.58