Finding the Fourth Proportional to 3,526.99, 5,290.47 and 1,061.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,526.99 : 5,290.47 = 1,061.81 : x
2. Step 2: Convert to fraction form
   3,526.99/5,290.47 = 1,061.81/x
3. Step 3: Cross multiply
   3,526.99x = 5,290.47 × 1,061.81
4. Step 4: Simplify right side
   3,526.99x = 5,617,447.50
5. Step 5: Solve for x
   x = 5,617,447.50/3,526.99
6. Step 6: Final answer
   x = 1,592.70