Finding the Fourth Proportional to 1,345.88, 1,857.32 and 756.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.88 : 1,857.32 = 756.41 : x
2. Step 2: Convert to fraction form
   1,345.88/1,857.32 = 756.41/x
3. Step 3: Cross multiply
   1,345.88x = 1,857.32 × 756.41
4. Step 4: Simplify right side
   1,345.88x = 1,404,882.35
5. Step 5: Solve for x
   x = 1,404,882.35/1,345.88
6. Step 6: Final answer
   x = 1,043.84