Finding the Fourth Proportional to 1,364.86, 1,883.61 and 775.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,364.86 : 1,883.61 = 775.45 : x
2. Step 2: Convert to fraction form
   1,364.86/1,883.61 = 775.45/x
3. Step 3: Cross multiply
   1,364.86x = 1,883.61 × 775.45
4. Step 4: Simplify right side
   1,364.86x = 1,460,640.67
5. Step 5: Solve for x
   x = 1,460,640.67/1,364.86
6. Step 6: Final answer
   x = 1,070.18