Finding the Fourth Proportional to 1,870.66, 2,805.18 and 700.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.66 : 2,805.18 = 700.72 : x
2. Step 2: Convert to fraction form
   1,870.66/2,805.18 = 700.72/x
3. Step 3: Cross multiply
   1,870.66x = 2,805.18 × 700.72
4. Step 4: Simplify right side
   1,870.66x = 1,965,645.73
5. Step 5: Solve for x
   x = 1,965,645.73/1,870.66
6. Step 6: Final answer
   x = 1,050.78