Finding the Fourth Proportional to 2,789.16, 4,181.58 and 1,326.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.16 : 4,181.58 = 1,326.12 : x
2. Step 2: Convert to fraction form
   2,789.16/4,181.58 = 1,326.12/x
3. Step 3: Cross multiply
   2,789.16x = 4,181.58 × 1,326.12
4. Step 4: Simplify right side
   2,789.16x = 5,545,276.87
5. Step 5: Solve for x
   x = 5,545,276.87/2,789.16
6. Step 6: Final answer
   x = 1,988.15