Finding the Fourth Proportional to 1,689.51, 2,531.83 and 714.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.51 : 2,531.83 = 714.27 : x
2. Step 2: Convert to fraction form
   1,689.51/2,531.83 = 714.27/x
3. Step 3: Cross multiply
   1,689.51x = 2,531.83 × 714.27
4. Step 4: Simplify right side
   1,689.51x = 1,808,410.21
5. Step 5: Solve for x
   x = 1,808,410.21/1,689.51
6. Step 6: Final answer
   x = 1,070.38