Finding the Fourth Proportional to 2,182.87, 3,012.15 and 1,298.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.87 : 3,012.15 = 1,298.89 : x
2. Step 2: Convert to fraction form
   2,182.87/3,012.15 = 1,298.89/x
3. Step 3: Cross multiply
   2,182.87x = 3,012.15 × 1,298.89
4. Step 4: Simplify right side
   2,182.87x = 3,912,451.51
5. Step 5: Solve for x
   x = 3,912,451.51/2,182.87
6. Step 6: Final answer
   x = 1,792.34