Finding the Fourth Proportional to 1,347.04, 1,859.18 and 905.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.04 : 1,859.18 = 905.59 : x
2. Step 2: Convert to fraction form
   1,347.04/1,859.18 = 905.59/x
3. Step 3: Cross multiply
   1,347.04x = 1,859.18 × 905.59
4. Step 4: Simplify right side
   1,347.04x = 1,683,654.82
5. Step 5: Solve for x
   x = 1,683,654.82/1,347.04
6. Step 6: Final answer
   x = 1,249.89