Finding the Fourth Proportional to 3,607.35, 5,411.83 and 1,142.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,607.35 : 5,411.83 = 1,142.31 : x
2. Step 2: Convert to fraction form
   3,607.35/5,411.83 = 1,142.31/x
3. Step 3: Cross multiply
   3,607.35x = 5,411.83 × 1,142.31
4. Step 4: Simplify right side
   3,607.35x = 6,181,987.53
5. Step 5: Solve for x
   x = 6,181,987.53/3,607.35
6. Step 6: Final answer
   x = 1,713.72