Finding the Fourth Proportional to 1,185.63, 1,773.99 and 1,123.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.63 : 1,773.99 = 1,123.13 : x
2. Step 2: Convert to fraction form
   1,185.63/1,773.99 = 1,123.13/x
3. Step 3: Cross multiply
   1,185.63x = 1,773.99 × 1,123.13
4. Step 4: Simplify right side
   1,185.63x = 1,992,412.52
5. Step 5: Solve for x
   x = 1,992,412.52/1,185.63
6. Step 6: Final answer
   x = 1,680.47