Finding the Fourth Proportional to 1,870.22, 2,805.92 and 775.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.22 : 2,805.92 = 775.10 : x
2. Step 2: Convert to fraction form
   1,870.22/2,805.92 = 775.10/x
3. Step 3: Cross multiply
   1,870.22x = 2,805.92 × 775.10
4. Step 4: Simplify right side
   1,870.22x = 2,174,868.59
5. Step 5: Solve for x
   x = 2,174,868.59/1,870.22
6. Step 6: Final answer
   x = 1,162.89