Finding the Fourth Proportional to 3,526.89, 5,290.83 and 1,447.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,526.89 : 5,290.83 = 1,447.20 : x
2. Step 2: Convert to fraction form
   3,526.89/5,290.83 = 1,447.20/x
3. Step 3: Cross multiply
   3,526.89x = 5,290.83 × 1,447.20
4. Step 4: Simplify right side
   3,526.89x = 7,656,889.18
5. Step 5: Solve for x
   x = 7,656,889.18/3,526.89
6. Step 6: Final answer
   x = 2,171.00