Finding the Fourth Proportional to 2,752.78, 4,130.52 and 1,292.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.78 : 4,130.52 = 1,292.05 : x
2. Step 2: Convert to fraction form
   2,752.78/4,130.52 = 1,292.05/x
3. Step 3: Cross multiply
   2,752.78x = 4,130.52 × 1,292.05
4. Step 4: Simplify right side
   2,752.78x = 5,336,838.37
5. Step 5: Solve for x
   x = 5,336,838.37/2,752.78
6. Step 6: Final answer
   x = 1,938.71