Finding the Fourth Proportional to 1,981.54, 2,971.78 and 748.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.54 : 2,971.78 = 748.59 : x
2. Step 2: Convert to fraction form
   1,981.54/2,971.78 = 748.59/x
3. Step 3: Cross multiply
   1,981.54x = 2,971.78 × 748.59
4. Step 4: Simplify right side
   1,981.54x = 2,224,644.79
5. Step 5: Solve for x
   x = 2,224,644.79/1,981.54
6. Step 6: Final answer
   x = 1,122.68