Finding the Fourth Proportional to 2,215.83, 3,057.16 and 1,319.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.83 : 3,057.16 = 1,319.16 : x
2. Step 2: Convert to fraction form
   2,215.83/3,057.16 = 1,319.16/x
3. Step 3: Cross multiply
   2,215.83x = 3,057.16 × 1,319.16
4. Step 4: Simplify right side
   2,215.83x = 4,032,876.59
5. Step 5: Solve for x
   x = 4,032,876.59/2,215.83
6. Step 6: Final answer
   x = 1,820.03