Finding the Fourth Proportional to 1,613.34, 2,225.82 and 983.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.34 : 2,225.82 = 983.61 : x
2. Step 2: Convert to fraction form
   1,613.34/2,225.82 = 983.61/x
3. Step 3: Cross multiply
   1,613.34x = 2,225.82 × 983.61
4. Step 4: Simplify right side
   1,613.34x = 2,189,338.81
5. Step 5: Solve for x
   x = 2,189,338.81/1,613.34
6. Step 6: Final answer
   x = 1,357.02