Finding the Fourth Proportional to 1,373.65, 1,895.17 and 776.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.65 : 1,895.17 = 776.06 : x
2. Step 2: Convert to fraction form
   1,373.65/1,895.17 = 776.06/x
3. Step 3: Cross multiply
   1,373.65x = 1,895.17 × 776.06
4. Step 4: Simplify right side
   1,373.65x = 1,470,756.15
5. Step 5: Solve for x
   x = 1,470,756.15/1,373.65
6. Step 6: Final answer
   x = 1,070.70