Finding the Fourth Proportional to 2,526.43, 3,486.64 and 1,531.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,526.43 : 3,486.64 = 1,531.80 : x
2. Step 2: Convert to fraction form
   2,526.43/3,486.64 = 1,531.80/x
3. Step 3: Cross multiply
   2,526.43x = 3,486.64 × 1,531.80
4. Step 4: Simplify right side
   2,526.43x = 5,340,835.15
5. Step 5: Solve for x
   x = 5,340,835.15/2,526.43
6. Step 6: Final answer
   x = 2,113.99