Finding the Fourth Proportional to 1,981.41, 2,970.50 and 748.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.41 : 2,970.50 = 748.12 : x
2. Step 2: Convert to fraction form
   1,981.41/2,970.50 = 748.12/x
3. Step 3: Cross multiply
   1,981.41x = 2,970.50 × 748.12
4. Step 4: Simplify right side
   1,981.41x = 2,222,279.29
5. Step 5: Solve for x
   x = 2,222,279.29/1,981.41
6. Step 6: Final answer
   x = 1,121.56