Finding the Fourth Proportional to 1,679.32, 2,516.82 and 1,355.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.32 : 2,516.82 = 1,355.32 : x
2. Step 2: Convert to fraction form
   1,679.32/2,516.82 = 1,355.32/x
3. Step 3: Cross multiply
   1,679.32x = 2,516.82 × 1,355.32
4. Step 4: Simplify right side
   1,679.32x = 3,411,096.48
5. Step 5: Solve for x
   x = 3,411,096.48/1,679.32
6. Step 6: Final answer
   x = 2,031.24