Finding the Fourth Proportional to 1,368.34, 1,887.98 and 808.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.34 : 1,887.98 = 808.77 : x
2. Step 2: Convert to fraction form
   1,368.34/1,887.98 = 808.77/x
3. Step 3: Cross multiply
   1,368.34x = 1,887.98 × 808.77
4. Step 4: Simplify right side
   1,368.34x = 1,526,934.17
5. Step 5: Solve for x
   x = 1,526,934.17/1,368.34
6. Step 6: Final answer
   x = 1,115.90