Finding the Fourth Proportional to 1,871.78, 2,800.71 and 1,175.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.78 : 2,800.71 = 1,175.19 : x
2. Step 2: Convert to fraction form
   1,871.78/2,800.71 = 1,175.19/x
3. Step 3: Cross multiply
   1,871.78x = 2,800.71 × 1,175.19
4. Step 4: Simplify right side
   1,871.78x = 3,291,355.88
5. Step 5: Solve for x
   x = 3,291,355.88/1,871.78
6. Step 6: Final answer
   x = 1,758.41