Finding the Fourth Proportional to 2,145.52, 2,961.04 and 1,214.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.52 : 2,961.04 = 1,214.32 : x
2. Step 2: Convert to fraction form
   2,145.52/2,961.04 = 1,214.32/x
3. Step 3: Cross multiply
   2,145.52x = 2,961.04 × 1,214.32
4. Step 4: Simplify right side
   2,145.52x = 3,595,650.09
5. Step 5: Solve for x
   x = 3,595,650.09/2,145.52
6. Step 6: Final answer
   x = 1,675.89