Finding the Fourth Proportional to 1,852.59, 2,554.92 and 1,222.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.59 : 2,554.92 = 1,222.68 : x
2. Step 2: Convert to fraction form
   1,852.59/2,554.92 = 1,222.68/x
3. Step 3: Cross multiply
   1,852.59x = 2,554.92 × 1,222.68
4. Step 4: Simplify right side
   1,852.59x = 3,123,849.59
5. Step 5: Solve for x
   x = 3,123,849.59/1,852.59
6. Step 6: Final answer
   x = 1,686.21