Finding the Fourth Proportional to 1,223.55, 1,835.61 and 357.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.55 : 1,835.61 = 357.93 : x
2. Step 2: Convert to fraction form
   1,223.55/1,835.61 = 357.93/x
3. Step 3: Cross multiply
   1,223.55x = 1,835.61 × 357.93
4. Step 4: Simplify right side
   1,223.55x = 657,019.89
5. Step 5: Solve for x
   x = 657,019.89/1,223.55
6. Step 6: Final answer
   x = 536.98