Finding the Fourth Proportional to 1,870.85, 2,804.73 and 776.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.85 : 2,804.73 = 776.00 : x
2. Step 2: Convert to fraction form
   1,870.85/2,804.73 = 776.00/x
3. Step 3: Cross multiply
   1,870.85x = 2,804.73 × 776.00
4. Step 4: Simplify right side
   1,870.85x = 2,176,456.46
5. Step 5: Solve for x
   x = 2,176,456.46/1,870.85
6. Step 6: Final answer
   x = 1,163.35