Finding the Fourth Proportional to 2,789.33, 3,848.90 and 1,670.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.33 : 3,848.90 = 1,670.31 : x
2. Step 2: Convert to fraction form
   2,789.33/3,848.90 = 1,670.31/x
3. Step 3: Cross multiply
   2,789.33x = 3,848.90 × 1,670.31
4. Step 4: Simplify right side
   2,789.33x = 6,428,847.81
5. Step 5: Solve for x
   x = 6,428,847.81/2,789.33
6. Step 6: Final answer
   x = 2,304.80