Finding the Fourth Proportional to 1,372.41, 1,893.88 and 775.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.41 : 1,893.88 = 775.09 : x
2. Step 2: Convert to fraction form
   1,372.41/1,893.88 = 775.09/x
3. Step 3: Cross multiply
   1,372.41x = 1,893.88 × 775.09
4. Step 4: Simplify right side
   1,372.41x = 1,467,917.98
5. Step 5: Solve for x
   x = 1,467,917.98/1,372.41
6. Step 6: Final answer
   x = 1,069.59