Finding the Fourth Proportional to 1,813.89, 2,503.46 and 1,316.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,813.89 : 2,503.46 = 1,316.35 : x
2. Step 2: Convert to fraction form
   1,813.89/2,503.46 = 1,316.35/x
3. Step 3: Cross multiply
   1,813.89x = 2,503.46 × 1,316.35
4. Step 4: Simplify right side
   1,813.89x = 3,295,428.59
5. Step 5: Solve for x
   x = 3,295,428.59/1,813.89
6. Step 6: Final answer
   x = 1,816.77