Finding the Fourth Proportional to 1,376.03, 2,058.89 and 818.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.03 : 2,058.89 = 818.70 : x
2. Step 2: Convert to fraction form
   1,376.03/2,058.89 = 818.70/x
3. Step 3: Cross multiply
   1,376.03x = 2,058.89 × 818.70
4. Step 4: Simplify right side
   1,376.03x = 1,685,609.15
5. Step 5: Solve for x
   x = 1,685,609.15/1,376.03
6. Step 6: Final answer
   x = 1,224.98