Finding the Fourth Proportional to 1,354.28, 1,868.85 and 830.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.28 : 1,868.85 = 830.32 : x
2. Step 2: Convert to fraction form
   1,354.28/1,868.85 = 830.32/x
3. Step 3: Cross multiply
   1,354.28x = 1,868.85 × 830.32
4. Step 4: Simplify right side
   1,354.28x = 1,551,738.86
5. Step 5: Solve for x
   x = 1,551,738.86/1,354.28
6. Step 6: Final answer
   x = 1,145.81