Finding the Fourth Proportional to 1,870.12, 2,805.10 and 773.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.12 : 2,805.10 = 773.73 : x
2. Step 2: Convert to fraction form
   1,870.12/2,805.10 = 773.73/x
3. Step 3: Cross multiply
   1,870.12x = 2,805.10 × 773.73
4. Step 4: Simplify right side
   1,870.12x = 2,170,390.02
5. Step 5: Solve for x
   x = 2,170,390.02/1,870.12
6. Step 6: Final answer
   x = 1,160.56