Finding the Fourth Proportional to 2,547.48, 3,817.90 and 985.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.48 : 3,817.90 = 985.94 : x
2. Step 2: Convert to fraction form
   2,547.48/3,817.90 = 985.94/x
3. Step 3: Cross multiply
   2,547.48x = 3,817.90 × 985.94
4. Step 4: Simplify right side
   2,547.48x = 3,764,216.79
5. Step 5: Solve for x
   x = 3,764,216.79/2,547.48
6. Step 6: Final answer
   x = 1,477.62