Finding the Fourth Proportional to 1,981.76, 2,971.89 and 748.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.76 : 2,971.89 = 748.51 : x
2. Step 2: Convert to fraction form
   1,981.76/2,971.89 = 748.51/x
3. Step 3: Cross multiply
   1,981.76x = 2,971.89 × 748.51
4. Step 4: Simplify right side
   1,981.76x = 2,224,481.95
5. Step 5: Solve for x
   x = 2,224,481.95/1,981.76
6. Step 6: Final answer
   x = 1,122.48