Finding the Fourth Proportional to 1,457.98, 2,181.83 and 910.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.98 : 2,181.83 = 910.42 : x
2. Step 2: Convert to fraction form
   1,457.98/2,181.83 = 910.42/x
3. Step 3: Cross multiply
   1,457.98x = 2,181.83 × 910.42
4. Step 4: Simplify right side
   1,457.98x = 1,986,381.67
5. Step 5: Solve for x
   x = 1,986,381.67/1,457.98
6. Step 6: Final answer
   x = 1,362.42