Finding the Fourth Proportional to 3,703.78, 5,112.06 and 2,132.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,703.78 : 5,112.06 = 2,132.80 : x
2. Step 2: Convert to fraction form
   3,703.78/5,112.06 = 2,132.80/x
3. Step 3: Cross multiply
   3,703.78x = 5,112.06 × 2,132.80
4. Step 4: Simplify right side
   3,703.78x = 10,903,001.57
5. Step 5: Solve for x
   x = 10,903,001.57/3,703.78
6. Step 6: Final answer
   x = 2,943.75