Finding the Fourth Proportional to 498.51, 748.59 and 446.53

Step by Step Solution

1. Step 1: Write the proportion equation
   498.51 : 748.59 = 446.53 : x
2. Step 2: Convert to fraction form
   498.51/748.59 = 446.53/x
3. Step 3: Cross multiply
   498.51x = 748.59 × 446.53
4. Step 4: Simplify right side
   498.51x = 334,267.89
5. Step 5: Solve for x
   x = 334,267.89/498.51
6. Step 6: Final answer
   x = 670.53