Finding the Fourth Proportional to 1,607.22, 2,407.38 and 1,431.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.22 : 2,407.38 = 1,431.96 : x
2. Step 2: Convert to fraction form
   1,607.22/2,407.38 = 1,431.96/x
3. Step 3: Cross multiply
   1,607.22x = 2,407.38 × 1,431.96
4. Step 4: Simplify right side
   1,607.22x = 3,447,271.86
5. Step 5: Solve for x
   x = 3,447,271.86/1,607.22
6. Step 6: Final answer
   x = 2,144.87