Finding the Fourth Proportional to 2,116.06, 2,921.60 and 1,319.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.06 : 2,921.60 = 1,319.69 : x
2. Step 2: Convert to fraction form
   2,116.06/2,921.60 = 1,319.69/x
3. Step 3: Cross multiply
   2,116.06x = 2,921.60 × 1,319.69
4. Step 4: Simplify right side
   2,116.06x = 3,855,616.91
5. Step 5: Solve for x
   x = 3,855,616.91/2,116.06
6. Step 6: Final answer
   x = 1,822.08