Finding the Fourth Proportional to 1,868.27, 2,801.39 and 771.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.27 : 2,801.39 = 771.93 : x
2. Step 2: Convert to fraction form
   1,868.27/2,801.39 = 771.93/x
3. Step 3: Cross multiply
   1,868.27x = 2,801.39 × 771.93
4. Step 4: Simplify right side
   1,868.27x = 2,162,473.12
5. Step 5: Solve for x
   x = 2,162,473.12/1,868.27
6. Step 6: Final answer
   x = 1,157.48