Finding the Fourth Proportional to 2,376.67, 3,279.72 and 1,328.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.67 : 3,279.72 = 1,328.71 : x
2. Step 2: Convert to fraction form
   2,376.67/3,279.72 = 1,328.71/x
3. Step 3: Cross multiply
   2,376.67x = 3,279.72 × 1,328.71
4. Step 4: Simplify right side
   2,376.67x = 4,357,796.76
5. Step 5: Solve for x
   x = 4,357,796.76/2,376.67
6. Step 6: Final answer
   x = 1,833.57