Finding the Fourth Proportional to 3,582.96, 5,374.29 and 985.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,582.96 : 5,374.29 = 985.89 : x
2. Step 2: Convert to fraction form
   3,582.96/5,374.29 = 985.89/x
3. Step 3: Cross multiply
   3,582.96x = 5,374.29 × 985.89
4. Step 4: Simplify right side
   3,582.96x = 5,298,458.77
5. Step 5: Solve for x
   x = 5,298,458.77/3,582.96
6. Step 6: Final answer
   x = 1,478.79