Finding the Fourth Proportional to 1,852.41, 2,555.50 and 1,222.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.41 : 2,555.50 = 1,222.13 : x
2. Step 2: Convert to fraction form
   1,852.41/2,555.50 = 1,222.13/x
3. Step 3: Cross multiply
   1,852.41x = 2,555.50 × 1,222.13
4. Step 4: Simplify right side
   1,852.41x = 3,123,153.22
5. Step 5: Solve for x
   x = 3,123,153.22/1,852.41
6. Step 6: Final answer
   x = 1,685.99