Finding the Fourth Proportional to 1,997.68, 2,756.70 and 1,113.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.68 : 2,756.70 = 1,113.48 : x
2. Step 2: Convert to fraction form
   1,997.68/2,756.70 = 1,113.48/x
3. Step 3: Cross multiply
   1,997.68x = 2,756.70 × 1,113.48
4. Step 4: Simplify right side
   1,997.68x = 3,069,530.32
5. Step 5: Solve for x
   x = 3,069,530.32/1,997.68
6. Step 6: Final answer
   x = 1,536.55