Finding the Fourth Proportional to 1,372.91, 1,894.10 and 875.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.91 : 1,894.10 = 875.43 : x
2. Step 2: Convert to fraction form
   1,372.91/1,894.10 = 875.43/x
3. Step 3: Cross multiply
   1,372.91x = 1,894.10 × 875.43
4. Step 4: Simplify right side
   1,372.91x = 1,658,147.59
5. Step 5: Solve for x
   x = 1,658,147.59/1,372.91
6. Step 6: Final answer
   x = 1,207.77