Finding the Fourth Proportional to 1,345.42, 1,856.52 and 747.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.42 : 1,856.52 = 747.82 : x
2. Step 2: Convert to fraction form
   1,345.42/1,856.52 = 747.82/x
3. Step 3: Cross multiply
   1,345.42x = 1,856.52 × 747.82
4. Step 4: Simplify right side
   1,345.42x = 1,388,342.79
5. Step 5: Solve for x
   x = 1,388,342.79/1,345.42
6. Step 6: Final answer
   x = 1,031.90