Finding the Fourth Proportional to 1,373.45, 1,894.68 and 980.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.45 : 1,894.68 = 980.71 : x
2. Step 2: Convert to fraction form
   1,373.45/1,894.68 = 980.71/x
3. Step 3: Cross multiply
   1,373.45x = 1,894.68 × 980.71
4. Step 4: Simplify right side
   1,373.45x = 1,858,131.62
5. Step 5: Solve for x
   x = 1,858,131.62/1,373.45
6. Step 6: Final answer
   x = 1,352.89