Finding the Fourth Proportional to 1,687.95, 2,329.52 and 942.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687.95 : 2,329.52 = 942.05 : x
2. Step 2: Convert to fraction form
   1,687.95/2,329.52 = 942.05/x
3. Step 3: Cross multiply
   1,687.95x = 2,329.52 × 942.05
4. Step 4: Simplify right side
   1,687.95x = 2,194,507.96
5. Step 5: Solve for x
   x = 2,194,507.96/1,687.95
6. Step 6: Final answer
   x = 1,300.10