Finding the Fourth Proportional to 1,365.07, 1,883.72 and 775.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.07 : 1,883.72 = 775.56 : x
2. Step 2: Convert to fraction form
   1,365.07/1,883.72 = 775.56/x
3. Step 3: Cross multiply
   1,365.07x = 1,883.72 × 775.56
4. Step 4: Simplify right side
   1,365.07x = 1,460,937.88
5. Step 5: Solve for x
   x = 1,460,937.88/1,365.07
6. Step 6: Final answer
   x = 1,070.23