Finding the Fourth Proportional to 2,128.20, 2,935.72 and 1,332.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.20 : 2,935.72 = 1,332.06 : x
2. Step 2: Convert to fraction form
   2,128.20/2,935.72 = 1,332.06/x
3. Step 3: Cross multiply
   2,128.20x = 2,935.72 × 1,332.06
4. Step 4: Simplify right side
   2,128.20x = 3,910,555.18
5. Step 5: Solve for x
   x = 3,910,555.18/2,128.20
6. Step 6: Final answer
   x = 1,837.49