Finding the Fourth Proportional to 1,862.30, 2,570.55 and 1,199.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,862.30 : 2,570.55 = 1,199.15 : x
2. Step 2: Convert to fraction form
   1,862.30/2,570.55 = 1,199.15/x
3. Step 3: Cross multiply
   1,862.30x = 2,570.55 × 1,199.15
4. Step 4: Simplify right side
   1,862.30x = 3,082,475.03
5. Step 5: Solve for x
   x = 3,082,475.03/1,862.30
6. Step 6: Final answer
   x = 1,655.20