Finding the Fourth Proportional to 1,981.18, 2,971.50 and 1,158.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.18 : 2,971.50 = 1,158.22 : x
2. Step 2: Convert to fraction form
   1,981.18/2,971.50 = 1,158.22/x
3. Step 3: Cross multiply
   1,981.18x = 2,971.50 × 1,158.22
4. Step 4: Simplify right side
   1,981.18x = 3,441,650.73
5. Step 5: Solve for x
   x = 3,441,650.73/1,981.18
6. Step 6: Final answer
   x = 1,737.17