Finding the Fourth Proportional to 1,457.52, 2,011.72 and 898.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.52 : 2,011.72 = 898.34 : x
2. Step 2: Convert to fraction form
   1,457.52/2,011.72 = 898.34/x
3. Step 3: Cross multiply
   1,457.52x = 2,011.72 × 898.34
4. Step 4: Simplify right side
   1,457.52x = 1,807,208.54
5. Step 5: Solve for x
   x = 1,807,208.54/1,457.52
6. Step 6: Final answer
   x = 1,239.92