Finding the Fourth Proportional to 1,842.72, 2,540.16 and 1,561.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,842.72 : 2,540.16 = 1,561.92 : x
2. Step 2: Convert to fraction form
   1,842.72/2,540.16 = 1,561.92/x
3. Step 3: Cross multiply
   1,842.72x = 2,540.16 × 1,561.92
4. Step 4: Simplify right side
   1,842.72x = 3,967,526.71
5. Step 5: Solve for x
   x = 3,967,526.71/1,842.72
6. Step 6: Final answer
   x = 2,153.08