Finding the Fourth Proportional to 1,813.33, 2,503.80 and 1,393.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,813.33 : 2,503.80 = 1,393.01 : x
2. Step 2: Convert to fraction form
   1,813.33/2,503.80 = 1,393.01/x
3. Step 3: Cross multiply
   1,813.33x = 2,503.80 × 1,393.01
4. Step 4: Simplify right side
   1,813.33x = 3,487,826.27
5. Step 5: Solve for x
   x = 3,487,826.27/1,813.33
6. Step 6: Final answer
   x = 1,923.44