Finding the Fourth Proportional to 1,870.26, 2,805.72 and 774.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.26 : 2,805.72 = 774.01 : x
2. Step 2: Convert to fraction form
   1,870.26/2,805.72 = 774.01/x
3. Step 3: Cross multiply
   1,870.26x = 2,805.72 × 774.01
4. Step 4: Simplify right side
   1,870.26x = 2,171,655.34
5. Step 5: Solve for x
   x = 2,171,655.34/1,870.26
6. Step 6: Final answer
   x = 1,161.15