Finding the Fourth Proportional to 2,870.74, 4,307.73 and 1,227.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.74 : 4,307.73 = 1,227.16 : x
2. Step 2: Convert to fraction form
   2,870.74/4,307.73 = 1,227.16/x
3. Step 3: Cross multiply
   2,870.74x = 4,307.73 × 1,227.16
4. Step 4: Simplify right side
   2,870.74x = 5,286,273.95
5. Step 5: Solve for x
   x = 5,286,273.95/2,870.74
6. Step 6: Final answer
   x = 1,841.43