Finding the Fourth Proportional to 1,336.58, 2,007.76 and 1,131.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.58 : 2,007.76 = 1,131.56 : x
2. Step 2: Convert to fraction form
   1,336.58/2,007.76 = 1,131.56/x
3. Step 3: Cross multiply
   1,336.58x = 2,007.76 × 1,131.56
4. Step 4: Simplify right side
   1,336.58x = 2,271,900.91
5. Step 5: Solve for x
   x = 2,271,900.91/1,336.58
6. Step 6: Final answer
   x = 1,699.79