Finding the Fourth Proportional to 1,344.99, 1,856.12 and 755.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.99 : 1,856.12 = 755.57 : x
2. Step 2: Convert to fraction form
   1,344.99/1,856.12 = 755.57/x
3. Step 3: Cross multiply
   1,344.99x = 1,856.12 × 755.57
4. Step 4: Simplify right side
   1,344.99x = 1,402,428.59
5. Step 5: Solve for x
   x = 1,402,428.59/1,344.99
6. Step 6: Final answer
   x = 1,042.71