Finding the Fourth Proportional to 2,361.31, 3,536.56 and 1,129.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,361.31 : 3,536.56 = 1,129.59 : x
2. Step 2: Convert to fraction form
   2,361.31/3,536.56 = 1,129.59/x
3. Step 3: Cross multiply
   2,361.31x = 3,536.56 × 1,129.59
4. Step 4: Simplify right side
   2,361.31x = 3,994,862.81
5. Step 5: Solve for x
   x = 3,994,862.81/2,361.31
6. Step 6: Final answer
   x = 1,691.80