Finding the Fourth Proportional to 1,003.34, 1,503.15 and 873.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.34 : 1,503.15 = 873.74 : x
2. Step 2: Convert to fraction form
   1,003.34/1,503.15 = 873.74/x
3. Step 3: Cross multiply
   1,003.34x = 1,503.15 × 873.74
4. Step 4: Simplify right side
   1,003.34x = 1,313,362.28
5. Step 5: Solve for x
   x = 1,313,362.28/1,003.34
6. Step 6: Final answer
   x = 1,308.99