Finding the Fourth Proportional to 989.98, 1,484.76 and 404.82

Step by Step Solution

1. Step 1: Write the proportion equation
   989.98 : 1,484.76 = 404.82 : x
2. Step 2: Convert to fraction form
   989.98/1,484.76 = 404.82/x
3. Step 3: Cross multiply
   989.98x = 1,484.76 × 404.82
4. Step 4: Simplify right side
   989.98x = 601,060.54
5. Step 5: Solve for x
   x = 601,060.54/989.98
6. Step 6: Final answer
   x = 607.14