Finding the Fourth Proportional to 1,011.42, 1,393.71 and 775.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.42 : 1,393.71 = 775.37 : x
2. Step 2: Convert to fraction form
   1,011.42/1,393.71 = 775.37/x
3. Step 3: Cross multiply
   1,011.42x = 1,393.71 × 775.37
4. Step 4: Simplify right side
   1,011.42x = 1,080,641.50
5. Step 5: Solve for x
   x = 1,080,641.50/1,011.42
6. Step 6: Final answer
   x = 1,068.44