Finding the Fourth Proportional to 2,152.36, 2,969.22 and 1,531.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.36 : 2,969.22 = 1,531.72 : x
2. Step 2: Convert to fraction form
   2,152.36/2,969.22 = 1,531.72/x
3. Step 3: Cross multiply
   2,152.36x = 2,969.22 × 1,531.72
4. Step 4: Simplify right side
   2,152.36x = 4,548,013.66
5. Step 5: Solve for x
   x = 4,548,013.66/2,152.36
6. Step 6: Final answer
   x = 2,113.04