Finding the Fourth Proportional to 1,404.12, 1,937.57 and 872.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.12 : 1,937.57 = 872.96 : x
2. Step 2: Convert to fraction form
   1,404.12/1,937.57 = 872.96/x
3. Step 3: Cross multiply
   1,404.12x = 1,937.57 × 872.96
4. Step 4: Simplify right side
   1,404.12x = 1,691,407.05
5. Step 5: Solve for x
   x = 1,691,407.05/1,404.12
6. Step 6: Final answer
   x = 1,204.60