Finding the Fourth Proportional to 1,381.42, 1,906.76 and 1,103.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.42 : 1,906.76 = 1,103.59 : x
2. Step 2: Convert to fraction form
   1,381.42/1,906.76 = 1,103.59/x
3. Step 3: Cross multiply
   1,381.42x = 1,906.76 × 1,103.59
4. Step 4: Simplify right side
   1,381.42x = 2,104,266.22
5. Step 5: Solve for x
   x = 2,104,266.22/1,381.42
6. Step 6: Final answer
   x = 1,523.27