Finding the Fourth Proportional to 2,376.63, 3,279.86 and 1,328.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.63 : 3,279.86 = 1,328.69 : x
2. Step 2: Convert to fraction form
   2,376.63/3,279.86 = 1,328.69/x
3. Step 3: Cross multiply
   2,376.63x = 3,279.86 × 1,328.69
4. Step 4: Simplify right side
   2,376.63x = 4,357,918.74
5. Step 5: Solve for x
   x = 4,357,918.74/2,376.63
6. Step 6: Final answer
   x = 1,833.65