Finding the Fourth Proportional to 1,140.89, 1,572.82 and 875.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.89 : 1,572.82 = 875.41 : x
2. Step 2: Convert to fraction form
   1,140.89/1,572.82 = 875.41/x
3. Step 3: Cross multiply
   1,140.89x = 1,572.82 × 875.41
4. Step 4: Simplify right side
   1,140.89x = 1,376,856.24
5. Step 5: Solve for x
   x = 1,376,856.24/1,140.89
6. Step 6: Final answer
   x = 1,206.83