Finding the Fourth Proportional to 1,342.89, 1,852.92 and 783.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.89 : 1,852.92 = 783.45 : x
2. Step 2: Convert to fraction form
   1,342.89/1,852.92 = 783.45/x
3. Step 3: Cross multiply
   1,342.89x = 1,852.92 × 783.45
4. Step 4: Simplify right side
   1,342.89x = 1,451,670.17
5. Step 5: Solve for x
   x = 1,451,670.17/1,342.89
6. Step 6: Final answer
   x = 1,081.00