Finding the Fourth Proportional to 1,258.34, 1,737.32 and 810.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.34 : 1,737.32 = 810.41 : x
2. Step 2: Convert to fraction form
   1,258.34/1,737.32 = 810.41/x
3. Step 3: Cross multiply
   1,258.34x = 1,737.32 × 810.41
4. Step 4: Simplify right side
   1,258.34x = 1,407,941.50
5. Step 5: Solve for x
   x = 1,407,941.50/1,258.34
6. Step 6: Final answer
   x = 1,118.89