Finding the Fourth Proportional to 2,870.51, 4,307.58 and 1,227.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.51 : 4,307.58 = 1,227.08 : x
2. Step 2: Convert to fraction form
   2,870.51/4,307.58 = 1,227.08/x
3. Step 3: Cross multiply
   2,870.51x = 4,307.58 × 1,227.08
4. Step 4: Simplify right side
   2,870.51x = 5,285,723.73
5. Step 5: Solve for x
   x = 5,285,723.73/2,870.51
6. Step 6: Final answer
   x = 1,841.39