Finding the Fourth Proportional to 1,182.48, 1,631.70 and 788.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.48 : 1,631.70 = 788.82 : x
2. Step 2: Convert to fraction form
   1,182.48/1,631.70 = 788.82/x
3. Step 3: Cross multiply
   1,182.48x = 1,631.70 × 788.82
4. Step 4: Simplify right side
   1,182.48x = 1,287,117.59
5. Step 5: Solve for x
   x = 1,287,117.59/1,182.48
6. Step 6: Final answer
   x = 1,088.49