Finding the Fourth Proportional to 1,385.44, 1,907.82 and 1,238.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.44 : 1,907.82 = 1,238.02 : x
2. Step 2: Convert to fraction form
   1,385.44/1,907.82 = 1,238.02/x
3. Step 3: Cross multiply
   1,385.44x = 1,907.82 × 1,238.02
4. Step 4: Simplify right side
   1,385.44x = 2,361,919.32
5. Step 5: Solve for x
   x = 2,361,919.32/1,385.44
6. Step 6: Final answer
   x = 1,704.82