Finding the Fourth Proportional to 1,997.75, 2,756.86 and 1,113.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.75 : 2,756.86 = 1,113.60 : x
2. Step 2: Convert to fraction form
   1,997.75/2,756.86 = 1,113.60/x
3. Step 3: Cross multiply
   1,997.75x = 2,756.86 × 1,113.60
4. Step 4: Simplify right side
   1,997.75x = 3,070,039.30
5. Step 5: Solve for x
   x = 3,070,039.30/1,997.75
6. Step 6: Final answer
   x = 1,536.75