Finding the Fourth Proportional to 2,985.69, 4,479.89 and 1,231.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,985.69 : 4,479.89 = 1,231.98 : x
2. Step 2: Convert to fraction form
   2,985.69/4,479.89 = 1,231.98/x
3. Step 3: Cross multiply
   2,985.69x = 4,479.89 × 1,231.98
4. Step 4: Simplify right side
   2,985.69x = 5,519,128.72
5. Step 5: Solve for x
   x = 5,519,128.72/2,985.69
6. Step 6: Final answer
   x = 1,848.53