Finding the Fourth Proportional to 1,678.52, 2,507.03 and 1,332.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.52 : 2,507.03 = 1,332.25 : x
2. Step 2: Convert to fraction form
   1,678.52/2,507.03 = 1,332.25/x
3. Step 3: Cross multiply
   1,678.52x = 2,507.03 × 1,332.25
4. Step 4: Simplify right side
   1,678.52x = 3,339,990.28
5. Step 5: Solve for x
   x = 3,339,990.28/1,678.52
6. Step 6: Final answer
   x = 1,989.84