Finding the Fourth Proportional to 2,689.71, 4,035.72 and 1,458

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.71 : 4,035.72 = 1,458 : x
2. Step 2: Convert to fraction form
   2,689.71/4,035.72 = 1,458/x
3. Step 3: Cross multiply
   2,689.71x = 4,035.72 × 1,458
4. Step 4: Simplify right side
   2,689.71x = 5,884,079.76
5. Step 5: Solve for x
   x = 5,884,079.76/2,689.71
6. Step 6: Final answer
   x = 2,187.63