Finding the Fourth Proportional to 1,408.01, 2,111.47 and 714.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.01 : 2,111.47 = 714.38 : x
2. Step 2: Convert to fraction form
   1,408.01/2,111.47 = 714.38/x
3. Step 3: Cross multiply
   1,408.01x = 2,111.47 × 714.38
4. Step 4: Simplify right side
   1,408.01x = 1,508,379.60
5. Step 5: Solve for x
   x = 1,508,379.60/1,408.01
6. Step 6: Final answer
   x = 1,071.29