Finding the Fourth Proportional to 2,538.06, 3,804.78 and 893.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.06 : 3,804.78 = 893.70 : x
2. Step 2: Convert to fraction form
   2,538.06/3,804.78 = 893.70/x
3. Step 3: Cross multiply
   2,538.06x = 3,804.78 × 893.70
4. Step 4: Simplify right side
   2,538.06x = 3,400,331.89
5. Step 5: Solve for x
   x = 3,400,331.89/2,538.06
6. Step 6: Final answer
   x = 1,339.74