Finding the Fourth Proportional to 1,346.72, 1,858.80 and 823.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.72 : 1,858.80 = 823.04 : x
2. Step 2: Convert to fraction form
   1,346.72/1,858.80 = 823.04/x
3. Step 3: Cross multiply
   1,346.72x = 1,858.80 × 823.04
4. Step 4: Simplify right side
   1,346.72x = 1,529,866.75
5. Step 5: Solve for x
   x = 1,529,866.75/1,346.72
6. Step 6: Final answer
   x = 1,135.99