Finding the Fourth Proportional to 2,884.32, 3,978.30 and 1,765.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,884.32 : 3,978.30 = 1,765.50 : x
2. Step 2: Convert to fraction form
   2,884.32/3,978.30 = 1,765.50/x
3. Step 3: Cross multiply
   2,884.32x = 3,978.30 × 1,765.50
4. Step 4: Simplify right side
   2,884.32x = 7,023,688.65
5. Step 5: Solve for x
   x = 7,023,688.65/2,884.32
6. Step 6: Final answer
   x = 2,435.13