Finding the Fourth Proportional to 1,424.10, 2,136.18 and 1,099.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.10 : 2,136.18 = 1,099.86 : x
2. Step 2: Convert to fraction form
   1,424.10/2,136.18 = 1,099.86/x
3. Step 3: Cross multiply
   1,424.10x = 2,136.18 × 1,099.86
4. Step 4: Simplify right side
   1,424.10x = 2,349,498.93
5. Step 5: Solve for x
   x = 2,349,498.93/1,424.10
6. Step 6: Final answer
   x = 1,649.81