Finding the Fourth Proportional to 1,997.64, 2,756.56 and 1,113.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.64 : 2,756.56 = 1,113.43 : x
2. Step 2: Convert to fraction form
   1,997.64/2,756.56 = 1,113.43/x
3. Step 3: Cross multiply
   1,997.64x = 2,756.56 × 1,113.43
4. Step 4: Simplify right side
   1,997.64x = 3,069,236.60
5. Step 5: Solve for x
   x = 3,069,236.60/1,997.64
6. Step 6: Final answer
   x = 1,536.43