Finding the Fourth Proportional to 2,543.10, 3,807.20 and 1,929.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.10 : 3,807.20 = 1,929.22 : x
2. Step 2: Convert to fraction form
   2,543.10/3,807.20 = 1,929.22/x
3. Step 3: Cross multiply
   2,543.10x = 3,807.20 × 1,929.22
4. Step 4: Simplify right side
   2,543.10x = 7,344,921.69
5. Step 5: Solve for x
   x = 7,344,921.69/2,543.10
6. Step 6: Final answer
   x = 2,888.18