Finding the Fourth Proportional to 377.94, 521.82 and 290.82

Step by Step Solution

1. Step 1: Write the proportion equation
   377.94 : 521.82 = 290.82 : x
2. Step 2: Convert to fraction form
   377.94/521.82 = 290.82/x
3. Step 3: Cross multiply
   377.94x = 521.82 × 290.82
4. Step 4: Simplify right side
   377.94x = 151,755.69
5. Step 5: Solve for x
   x = 151,755.69/377.94
6. Step 6: Final answer
   x = 401.53