Finding the Fourth Proportional to 1,688.08, 2,329.59 and 942.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.08 : 2,329.59 = 942.01 : x
2. Step 2: Convert to fraction form
   1,688.08/2,329.59 = 942.01/x
3. Step 3: Cross multiply
   1,688.08x = 2,329.59 × 942.01
4. Step 4: Simplify right side
   1,688.08x = 2,194,485.43
5. Step 5: Solve for x
   x = 2,194,485.43/1,688.08
6. Step 6: Final answer
   x = 1,299.99