Finding the Fourth Proportional to 1,870.29, 2,803.91 and 774.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.29 : 2,803.91 = 774.06 : x
2. Step 2: Convert to fraction form
   1,870.29/2,803.91 = 774.06/x
3. Step 3: Cross multiply
   1,870.29x = 2,803.91 × 774.06
4. Step 4: Simplify right side
   1,870.29x = 2,170,390.70
5. Step 5: Solve for x
   x = 2,170,390.70/1,870.29
6. Step 6: Final answer
   x = 1,160.46