Finding the Fourth Proportional to 1,997.40, 2,756.39 and 1,113.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.40 : 2,756.39 = 1,113.24 : x
2. Step 2: Convert to fraction form
   1,997.40/2,756.39 = 1,113.24/x
3. Step 3: Cross multiply
   1,997.40x = 2,756.39 × 1,113.24
4. Step 4: Simplify right side
   1,997.40x = 3,068,518.04
5. Step 5: Solve for x
   x = 3,068,518.04/1,997.40
6. Step 6: Final answer
   x = 1,536.26