Finding the Fourth Proportional to 1,886.40, 2,830.41 and 1,227.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.40 : 2,830.41 = 1,227.06 : x
2. Step 2: Convert to fraction form
   1,886.40/2,830.41 = 1,227.06/x
3. Step 3: Cross multiply
   1,886.40x = 2,830.41 × 1,227.06
4. Step 4: Simplify right side
   1,886.40x = 3,473,082.89
5. Step 5: Solve for x
   x = 3,473,082.89/1,886.40
6. Step 6: Final answer
   x = 1,841.12