Finding the Fourth Proportional to 1,980.48, 2,973.42 and 1,007.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.48 : 2,973.42 = 1,007.28 : x
2. Step 2: Convert to fraction form
   1,980.48/2,973.42 = 1,007.28/x
3. Step 3: Cross multiply
   1,980.48x = 2,973.42 × 1,007.28
4. Step 4: Simplify right side
   1,980.48x = 2,995,066.50
5. Step 5: Solve for x
   x = 2,995,066.50/1,980.48
6. Step 6: Final answer
   x = 1,512.29