Finding the Fourth Proportional to 2,099.03, 3,145.68 and 1,111.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.03 : 3,145.68 = 1,111.59 : x
2. Step 2: Convert to fraction form
   2,099.03/3,145.68 = 1,111.59/x
3. Step 3: Cross multiply
   2,099.03x = 3,145.68 × 1,111.59
4. Step 4: Simplify right side
   2,099.03x = 3,496,706.43
5. Step 5: Solve for x
   x = 3,496,706.43/2,099.03
6. Step 6: Final answer
   x = 1,665.87