Finding the Fourth Proportional to 1,868.71, 2,799.15 and 893.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.71 : 2,799.15 = 893.83 : x
2. Step 2: Convert to fraction form
   1,868.71/2,799.15 = 893.83/x
3. Step 3: Cross multiply
   1,868.71x = 2,799.15 × 893.83
4. Step 4: Simplify right side
   1,868.71x = 2,501,964.24
5. Step 5: Solve for x
   x = 2,501,964.24/1,868.71
6. Step 6: Final answer
   x = 1,338.87