Finding the Fourth Proportional to 401.60, 602.55 and 158.00

Step by Step Solution

1. Step 1: Write the proportion equation
   401.60 : 602.55 = 158.00 : x
2. Step 2: Convert to fraction form
   401.60/602.55 = 158.00/x
3. Step 3: Cross multiply
   401.60x = 602.55 × 158.00
4. Step 4: Simplify right side
   401.60x = 95,199.89
5. Step 5: Solve for x
   x = 95,199.89/401.60
6. Step 6: Final answer
   x = 237.05