Finding the Fourth Proportional to 1,372.89, 1,894.08 and 875.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.89 : 1,894.08 = 875.42 : x
2. Step 2: Convert to fraction form
   1,372.89/1,894.08 = 875.42/x
3. Step 3: Cross multiply
   1,372.89x = 1,894.08 × 875.42
4. Step 4: Simplify right side
   1,372.89x = 1,658,116.43
5. Step 5: Solve for x
   x = 1,658,116.43/1,372.89
6. Step 6: Final answer
   x = 1,207.75