Finding the Fourth Proportional to 2,218.88, 3,061.74 and 1,322.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.88 : 3,061.74 = 1,322.51 : x
2. Step 2: Convert to fraction form
   2,218.88/3,061.74 = 1,322.51/x
3. Step 3: Cross multiply
   2,218.88x = 3,061.74 × 1,322.51
4. Step 4: Simplify right side
   2,218.88x = 4,049,166.46
5. Step 5: Solve for x
   x = 4,049,166.46/2,218.88
6. Step 6: Final answer
   x = 1,824.87