Finding the Fourth Proportional to 2,689.68, 3,710.58 and 1,570.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.68 : 3,710.58 = 1,570.50 : x
2. Step 2: Convert to fraction form
   2,689.68/3,710.58 = 1,570.50/x
3. Step 3: Cross multiply
   2,689.68x = 3,710.58 × 1,570.50
4. Step 4: Simplify right side
   2,689.68x = 5,827,465.89
5. Step 5: Solve for x
   x = 5,827,465.89/2,689.68
6. Step 6: Final answer
   x = 2,166.60