Finding the Fourth Proportional to 2,031.29, 3,045.10 and 1,686.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.29 : 3,045.10 = 1,686.83 : x
2. Step 2: Convert to fraction form
   2,031.29/3,045.10 = 1,686.83/x
3. Step 3: Cross multiply
   2,031.29x = 3,045.10 × 1,686.83
4. Step 4: Simplify right side
   2,031.29x = 5,136,557.60
5. Step 5: Solve for x
   x = 5,136,557.60/2,031.29
6. Step 6: Final answer
   x = 2,528.72