Finding the Fourth Proportional to 2,376.06, 3,279.10 and 1,328.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,376.06 : 3,279.10 = 1,328.20 : x
2. Step 2: Convert to fraction form
   2,376.06/3,279.10 = 1,328.20/x
3. Step 3: Cross multiply
   2,376.06x = 3,279.10 × 1,328.20
4. Step 4: Simplify right side
   2,376.06x = 4,355,300.62
5. Step 5: Solve for x
   x = 4,355,300.62/2,376.06
6. Step 6: Final answer
   x = 1,832.99