Finding the Fourth Proportional to 2,131.47, 2,935.22 and 1,878.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.47 : 2,935.22 = 1,878.12 : x
2. Step 2: Convert to fraction form
   2,131.47/2,935.22 = 1,878.12/x
3. Step 3: Cross multiply
   2,131.47x = 2,935.22 × 1,878.12
4. Step 4: Simplify right side
   2,131.47x = 5,512,686.00
5. Step 5: Solve for x
   x = 5,512,686.00/2,131.47
6. Step 6: Final answer
   x = 2,586.33