Finding the Fourth Proportional to 1,345.26, 1,856.42 and 747.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.26 : 1,856.42 = 747.76 : x
2. Step 2: Convert to fraction form
   1,345.26/1,856.42 = 747.76/x
3. Step 3: Cross multiply
   1,345.26x = 1,856.42 × 747.76
4. Step 4: Simplify right side
   1,345.26x = 1,388,156.62
5. Step 5: Solve for x
   x = 1,388,156.62/1,345.26
6. Step 6: Final answer
   x = 1,031.89