Finding the Fourth Proportional to 2,689.86, 4,035.82 and 1,047.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.86 : 4,035.82 = 1,047.56 : x
2. Step 2: Convert to fraction form
   2,689.86/4,035.82 = 1,047.56/x
3. Step 3: Cross multiply
   2,689.86x = 4,035.82 × 1,047.56
4. Step 4: Simplify right side
   2,689.86x = 4,227,763.60
5. Step 5: Solve for x
   x = 4,227,763.60/2,689.86
6. Step 6: Final answer
   x = 1,571.74