Finding the Fourth Proportional to 2,376.72, 3,279.55 and 1,328.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.72 : 3,279.55 = 1,328.85 : x
2. Step 2: Convert to fraction form
   2,376.72/3,279.55 = 1,328.85/x
3. Step 3: Cross multiply
   2,376.72x = 3,279.55 × 1,328.85
4. Step 4: Simplify right side
   2,376.72x = 4,358,030.02
5. Step 5: Solve for x
   x = 4,358,030.02/2,376.72
6. Step 6: Final answer
   x = 1,833.63