Finding the Fourth Proportional to 2,870.18, 4,301.67 and 1,224.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.18 : 4,301.67 = 1,224.80 : x
2. Step 2: Convert to fraction form
   2,870.18/4,301.67 = 1,224.80/x
3. Step 3: Cross multiply
   2,870.18x = 4,301.67 × 1,224.80
4. Step 4: Simplify right side
   2,870.18x = 5,268,685.42
5. Step 5: Solve for x
   x = 5,268,685.42/2,870.18
6. Step 6: Final answer
   x = 1,835.66