Finding the Fourth Proportional to 2,775.83, 4,165.02 and 1,215.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,775.83 : 4,165.02 = 1,215.62 : x
2. Step 2: Convert to fraction form
   2,775.83/4,165.02 = 1,215.62/x
3. Step 3: Cross multiply
   2,775.83x = 4,165.02 × 1,215.62
4. Step 4: Simplify right side
   2,775.83x = 5,063,060.79
5. Step 5: Solve for x
   x = 5,063,060.79/2,775.83
6. Step 6: Final answer
   x = 1,823.98