Finding the Fourth Proportional to 1,870.29, 2,806.25 and 716.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.29 : 2,806.25 = 716.85 : x
2. Step 2: Convert to fraction form
   1,870.29/2,806.25 = 716.85/x
3. Step 3: Cross multiply
   1,870.29x = 2,806.25 × 716.85
4. Step 4: Simplify right side
   1,870.29x = 2,011,656.73
5. Step 5: Solve for x
   x = 2,011,656.73/1,870.29
6. Step 6: Final answer
   x = 1,075.59