Finding the Fourth Proportional to 1,061.74, 1,591.73 and 403.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.74 : 1,591.73 = 403.48 : x
2. Step 2: Convert to fraction form
   1,061.74/1,591.73 = 403.48/x
3. Step 3: Cross multiply
   1,061.74x = 1,591.73 × 403.48
4. Step 4: Simplify right side
   1,061.74x = 642,221.24
5. Step 5: Solve for x
   x = 642,221.24/1,061.74
6. Step 6: Final answer
   x = 604.88