Finding the Fourth Proportional to 1,870.99, 2,805.37 and 774.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.99 : 2,805.37 = 774.75 : x
2. Step 2: Convert to fraction form
   1,870.99/2,805.37 = 774.75/x
3. Step 3: Cross multiply
   1,870.99x = 2,805.37 × 774.75
4. Step 4: Simplify right side
   1,870.99x = 2,173,460.41
5. Step 5: Solve for x
   x = 2,173,460.41/1,870.99
6. Step 6: Final answer
   x = 1,161.66