Finding the Fourth Proportional to 2,376.69, 3,279.47 and 1,328.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.69 : 3,279.47 = 1,328.55 : x
2. Step 2: Convert to fraction form
   2,376.69/3,279.47 = 1,328.55/x
3. Step 3: Cross multiply
   2,376.69x = 3,279.47 × 1,328.55
4. Step 4: Simplify right side
   2,376.69x = 4,356,933.23
5. Step 5: Solve for x
   x = 4,356,933.23/2,376.69
6. Step 6: Final answer
   x = 1,833.19