Finding the Fourth Proportional to 1,173.42, 1,617.69 and 841.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.42 : 1,617.69 = 841.26 : x
2. Step 2: Convert to fraction form
   1,173.42/1,617.69 = 841.26/x
3. Step 3: Cross multiply
   1,173.42x = 1,617.69 × 841.26
4. Step 4: Simplify right side
   1,173.42x = 1,360,897.89
5. Step 5: Solve for x
   x = 1,360,897.89/1,173.42
6. Step 6: Final answer
   x = 1,159.77