Finding the Fourth Proportional to 2,145.20, 2,962.32 and 1,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.20 : 2,962.32 = 1,359.50 : x
2. Step 2: Convert to fraction form
   2,145.20/2,962.32 = 1,359.50/x
3. Step 3: Cross multiply
   2,145.20x = 2,962.32 × 1,359.50
4. Step 4: Simplify right side
   2,145.20x = 4,027,274.04
5. Step 5: Solve for x
   x = 4,027,274.04/2,145.20
6. Step 6: Final answer
   x = 1,877.34