Finding the Fourth Proportional to 2,819.34, 3,917.52 and 2,788.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.34 : 3,917.52 = 2,788.92 : x
2. Step 2: Convert to fraction form
   2,819.34/3,917.52 = 2,788.92/x
3. Step 3: Cross multiply
   2,819.34x = 3,917.52 × 2,788.92
4. Step 4: Simplify right side
   2,819.34x = 10,925,649.88
5. Step 5: Solve for x
   x = 10,925,649.88/2,819.34
6. Step 6: Final answer
   x = 3,875.25