Finding the Fourth Proportional to 1,782.89, 2,672.71 and 808.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,782.89 : 2,672.71 = 808.46 : x
2. Step 2: Convert to fraction form
   1,782.89/2,672.71 = 808.46/x
3. Step 3: Cross multiply
   1,782.89x = 2,672.71 × 808.46
4. Step 4: Simplify right side
   1,782.89x = 2,160,779.13
5. Step 5: Solve for x
   x = 2,160,779.13/1,782.89
6. Step 6: Final answer
   x = 1,211.95