Finding the Fourth Proportional to 5,426.61, 8,139.89 and 1,531.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,426.61 : 8,139.89 = 1,531.01 : x
2. Step 2: Convert to fraction form
   5,426.61/8,139.89 = 1,531.01/x
3. Step 3: Cross multiply
   5,426.61x = 8,139.89 × 1,531.01
4. Step 4: Simplify right side
   5,426.61x = 12,462,204.63
5. Step 5: Solve for x
   x = 12,462,204.63/5,426.61
6. Step 6: Final answer
   x = 2,296.50