Finding the Fourth Proportional to 1,672.89, 2,510.22 and 686.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.89 : 2,510.22 = 686.43 : x
2. Step 2: Convert to fraction form
   1,672.89/2,510.22 = 686.43/x
3. Step 3: Cross multiply
   1,672.89x = 2,510.22 × 686.43
4. Step 4: Simplify right side
   1,672.89x = 1,723,090.31
5. Step 5: Solve for x
   x = 1,723,090.31/1,672.89
6. Step 6: Final answer
   x = 1,030.01