Finding the Fourth Proportional to 2,308.10, 3,184.16 and 1,561.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.10 : 3,184.16 = 1,561.79 : x
2. Step 2: Convert to fraction form
   2,308.10/3,184.16 = 1,561.79/x
3. Step 3: Cross multiply
   2,308.10x = 3,184.16 × 1,561.79
4. Step 4: Simplify right side
   2,308.10x = 4,972,989.40
5. Step 5: Solve for x
   x = 4,972,989.40/2,308.10
6. Step 6: Final answer
   x = 2,154.59