Finding the Fourth Proportional to 1,712.96, 2,569.36 and 1,191.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,712.96 : 2,569.36 = 1,191.42 : x
2. Step 2: Convert to fraction form
   1,712.96/2,569.36 = 1,191.42/x
3. Step 3: Cross multiply
   1,712.96x = 2,569.36 × 1,191.42
4. Step 4: Simplify right side
   1,712.96x = 3,061,186.89
5. Step 5: Solve for x
   x = 3,061,186.89/1,712.96
6. Step 6: Final answer
   x = 1,787.07