Finding the Fourth Proportional to 1,997.72, 2,756.82 and 1,113.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.72 : 2,756.82 = 1,113.50 : x
2. Step 2: Convert to fraction form
   1,997.72/2,756.82 = 1,113.50/x
3. Step 3: Cross multiply
   1,997.72x = 2,756.82 × 1,113.50
4. Step 4: Simplify right side
   1,997.72x = 3,069,705.29
5. Step 5: Solve for x
   x = 3,069,705.29/1,997.72
6. Step 6: Final answer
   x = 1,536.61