Finding the Fourth Proportional to 874.04, 1,314.72 and 866.72

Step by Step Solution

1. Step 1: Write the proportion equation
   874.04 : 1,314.72 = 866.72 : x
2. Step 2: Convert to fraction form
   874.04/1,314.72 = 866.72/x
3. Step 3: Cross multiply
   874.04x = 1,314.72 × 866.72
4. Step 4: Simplify right side
   874.04x = 1,139,494.12
5. Step 5: Solve for x
   x = 1,139,494.12/874.04
6. Step 6: Final answer
   x = 1,303.71