Finding the Fourth Proportional to 3,613.50, 5,419.77 and 981.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.50 : 5,419.77 = 981.19 : x
2. Step 2: Convert to fraction form
   3,613.50/5,419.77 = 981.19/x
3. Step 3: Cross multiply
   3,613.50x = 5,419.77 × 981.19
4. Step 4: Simplify right side
   3,613.50x = 5,317,818.88
5. Step 5: Solve for x
   x = 5,317,818.88/3,613.50
6. Step 6: Final answer
   x = 1,471.65