Finding the Fourth Proportional to 1,345.74, 1,856.96 and 756.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.74 : 1,856.96 = 756.26 : x
2. Step 2: Convert to fraction form
   1,345.74/1,856.96 = 756.26/x
3. Step 3: Cross multiply
   1,345.74x = 1,856.96 × 756.26
4. Step 4: Simplify right side
   1,345.74x = 1,404,344.57
5. Step 5: Solve for x
   x = 1,404,344.57/1,345.74
6. Step 6: Final answer
   x = 1,043.55