Finding the Fourth Proportional to 2,068.66, 2,857.89 and 1,543.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.66 : 2,857.89 = 1,543.78 : x
2. Step 2: Convert to fraction form
   2,068.66/2,857.89 = 1,543.78/x
3. Step 3: Cross multiply
   2,068.66x = 2,857.89 × 1,543.78
4. Step 4: Simplify right side
   2,068.66x = 4,411,953.42
5. Step 5: Solve for x
   x = 4,411,953.42/2,068.66
6. Step 6: Final answer
   x = 2,132.76