Finding the Fourth Proportional to 1,345.98, 1,857.55 and 756.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.98 : 1,857.55 = 756.62 : x
2. Step 2: Convert to fraction form
   1,345.98/1,857.55 = 756.62/x
3. Step 3: Cross multiply
   1,345.98x = 1,857.55 × 756.62
4. Step 4: Simplify right side
   1,345.98x = 1,405,459.48
5. Step 5: Solve for x
   x = 1,405,459.48/1,345.98
6. Step 6: Final answer
   x = 1,044.19