Finding the Fourth Proportional to 1,544.63, 2,316.89 and 1,238.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.63 : 2,316.89 = 1,238.42 : x
2. Step 2: Convert to fraction form
   1,544.63/2,316.89 = 1,238.42/x
3. Step 3: Cross multiply
   1,544.63x = 2,316.89 × 1,238.42
4. Step 4: Simplify right side
   1,544.63x = 2,869,282.91
5. Step 5: Solve for x
   x = 2,869,282.91/1,544.63
6. Step 6: Final answer
   x = 1,857.59