Finding the Fourth Proportional to 1,601.34, 2,401.54 and 561.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.34 : 2,401.54 = 561.15 : x
2. Step 2: Convert to fraction form
   1,601.34/2,401.54 = 561.15/x
3. Step 3: Cross multiply
   1,601.34x = 2,401.54 × 561.15
4. Step 4: Simplify right side
   1,601.34x = 1,347,624.17
5. Step 5: Solve for x
   x = 1,347,624.17/1,601.34
6. Step 6: Final answer
   x = 841.56