Finding the Fourth Proportional to 2,642.06, 3,960.06 and 1,253.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.06 : 3,960.06 = 1,253.42 : x
2. Step 2: Convert to fraction form
   2,642.06/3,960.06 = 1,253.42/x
3. Step 3: Cross multiply
   2,642.06x = 3,960.06 × 1,253.42
4. Step 4: Simplify right side
   2,642.06x = 4,963,641.61
5. Step 5: Solve for x
   x = 4,963,641.61/2,642.06
6. Step 6: Final answer
   x = 1,878.70