Finding the Fourth Proportional to 2,492.79, 3,439.57 and 1,560.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,492.79 : 3,439.57 = 1,560.75 : x
2. Step 2: Convert to fraction form
   2,492.79/3,439.57 = 1,560.75/x
3. Step 3: Cross multiply
   2,492.79x = 3,439.57 × 1,560.75
4. Step 4: Simplify right side
   2,492.79x = 5,368,308.88
5. Step 5: Solve for x
   x = 5,368,308.88/2,492.79
6. Step 6: Final answer
   x = 2,153.53