Finding the Fourth Proportional to 1,870.70, 2,805.82 and 774.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.70 : 2,805.82 = 774.94 : x
2. Step 2: Convert to fraction form
   1,870.70/2,805.82 = 774.94/x
3. Step 3: Cross multiply
   1,870.70x = 2,805.82 × 774.94
4. Step 4: Simplify right side
   1,870.70x = 2,174,342.15
5. Step 5: Solve for x
   x = 2,174,342.15/1,870.70
6. Step 6: Final answer
   x = 1,162.31