Finding the Fourth Proportional to 2,492.78, 3,440.07 and 1,373.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,492.78 : 3,440.07 = 1,373.72 : x
2. Step 2: Convert to fraction form
   2,492.78/3,440.07 = 1,373.72/x
3. Step 3: Cross multiply
   2,492.78x = 3,440.07 × 1,373.72
4. Step 4: Simplify right side
   2,492.78x = 4,725,675.76
5. Step 5: Solve for x
   x = 4,725,675.76/2,492.78
6. Step 6: Final answer
   x = 1,895.75