Finding the Fourth Proportional to 2,152.72, 2,969.88 and 1,435.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.72 : 2,969.88 = 1,435.24 : x
2. Step 2: Convert to fraction form
   2,152.72/2,969.88 = 1,435.24/x
3. Step 3: Cross multiply
   2,152.72x = 2,969.88 × 1,435.24
4. Step 4: Simplify right side
   2,152.72x = 4,262,490.57
5. Step 5: Solve for x
   x = 4,262,490.57/2,152.72
6. Step 6: Final answer
   x = 1,980.05