Finding the Fourth Proportional to 3,527.61, 5,290.17 and 1,061.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,527.61 : 5,290.17 = 1,061.79 : x
2. Step 2: Convert to fraction form
   3,527.61/5,290.17 = 1,061.79/x
3. Step 3: Cross multiply
   3,527.61x = 5,290.17 × 1,061.79
4. Step 4: Simplify right side
   3,527.61x = 5,617,049.60
5. Step 5: Solve for x
   x = 5,617,049.60/3,527.61
6. Step 6: Final answer
   x = 1,592.31