Finding the Fourth Proportional to 2,790.32, 3,850.72 and 1,670.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790.32 : 3,850.72 = 1,670.88 : x
2. Step 2: Convert to fraction form
   2,790.32/3,850.72 = 1,670.88/x
3. Step 3: Cross multiply
   2,790.32x = 3,850.72 × 1,670.88
4. Step 4: Simplify right side
   2,790.32x = 6,434,091.03
5. Step 5: Solve for x
   x = 6,434,091.03/2,790.32
6. Step 6: Final answer
   x = 2,305.86