Finding the Fourth Proportional to 1,003.83, 1,503.91 and 874.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.83 : 1,503.91 = 874.23 : x
2. Step 2: Convert to fraction form
   1,003.83/1,503.91 = 874.23/x
3. Step 3: Cross multiply
   1,003.83x = 1,503.91 × 874.23
4. Step 4: Simplify right side
   1,003.83x = 1,314,763.24
5. Step 5: Solve for x
   x = 1,314,763.24/1,003.83
6. Step 6: Final answer
   x = 1,309.75