Finding the Fourth Proportional to 1,980.56, 2,971.35 and 748.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.56 : 2,971.35 = 748.01 : x
2. Step 2: Convert to fraction form
   1,980.56/2,971.35 = 748.01/x
3. Step 3: Cross multiply
   1,980.56x = 2,971.35 × 748.01
4. Step 4: Simplify right side
   1,980.56x = 2,222,606.94
5. Step 5: Solve for x
   x = 2,222,606.94/1,980.56
6. Step 6: Final answer
   x = 1,122.21