Finding the Fourth Proportional to 2,819.48, 3,892.59 and 1,876.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.48 : 3,892.59 = 1,876.64 : x
2. Step 2: Convert to fraction form
   2,819.48/3,892.59 = 1,876.64/x
3. Step 3: Cross multiply
   2,819.48x = 3,892.59 × 1,876.64
4. Step 4: Simplify right side
   2,819.48x = 7,304,970.63
5. Step 5: Solve for x
   x = 7,304,970.63/2,819.48
6. Step 6: Final answer
   x = 2,590.90