Finding the Fourth Proportional to 1,368.50, 1,888.41 and 808.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.50 : 1,888.41 = 808.99 : x
2. Step 2: Convert to fraction form
   1,368.50/1,888.41 = 808.99/x
3. Step 3: Cross multiply
   1,368.50x = 1,888.41 × 808.99
4. Step 4: Simplify right side
   1,368.50x = 1,527,703.12
5. Step 5: Solve for x
   x = 1,527,703.12/1,368.50
6. Step 6: Final answer
   x = 1,116.34