Finding the Fourth Proportional to 1,601.55, 2,209.22 and 1,011.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.55 : 2,209.22 = 1,011.06 : x
2. Step 2: Convert to fraction form
   1,601.55/2,209.22 = 1,011.06/x
3. Step 3: Cross multiply
   1,601.55x = 2,209.22 × 1,011.06
4. Step 4: Simplify right side
   1,601.55x = 2,233,642.93
5. Step 5: Solve for x
   x = 2,233,642.93/1,601.55
6. Step 6: Final answer
   x = 1,394.68