Finding the Fourth Proportional to 1,613.34, 2,415.42 and 1,263.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.34 : 2,415.42 = 1,263.42 : x
2. Step 2: Convert to fraction form
   1,613.34/2,415.42 = 1,263.42/x
3. Step 3: Cross multiply
   1,613.34x = 2,415.42 × 1,263.42
4. Step 4: Simplify right side
   1,613.34x = 3,051,689.94
5. Step 5: Solve for x
   x = 3,051,689.94/1,613.34
6. Step 6: Final answer
   x = 1,891.54