Finding the Fourth Proportional to 1,811.76, 2,498.04 and 1,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.76 : 2,498.04 = 1,531.50 : x
2. Step 2: Convert to fraction form
   1,811.76/2,498.04 = 1,531.50/x
3. Step 3: Cross multiply
   1,811.76x = 2,498.04 × 1,531.50
4. Step 4: Simplify right side
   1,811.76x = 3,825,748.26
5. Step 5: Solve for x
   x = 3,825,748.26/1,811.76
6. Step 6: Final answer
   x = 2,111.62