Finding the Fourth Proportional to 1,346.49, 1,857.98 and 787.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.49 : 1,857.98 = 787.05 : x
2. Step 2: Convert to fraction form
   1,346.49/1,857.98 = 787.05/x
3. Step 3: Cross multiply
   1,346.49x = 1,857.98 × 787.05
4. Step 4: Simplify right side
   1,346.49x = 1,462,319.22
5. Step 5: Solve for x
   x = 1,462,319.22/1,346.49
6. Step 6: Final answer
   x = 1,086.02