Finding the Fourth Proportional to 1,456.10, 2,172.88 and 1,408.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.10 : 2,172.88 = 1,408.76 : x
2. Step 2: Convert to fraction form
   1,456.10/2,172.88 = 1,408.76/x
3. Step 3: Cross multiply
   1,456.10x = 2,172.88 × 1,408.76
4. Step 4: Simplify right side
   1,456.10x = 3,061,066.43
5. Step 5: Solve for x
   x = 3,061,066.43/1,456.10
6. Step 6: Final answer
   x = 2,102.24