Finding the Fourth Proportional to 1,688.55, 2,330.15 and 942.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.55 : 2,330.15 = 942.50 : x
2. Step 2: Convert to fraction form
   1,688.55/2,330.15 = 942.50/x
3. Step 3: Cross multiply
   1,688.55x = 2,330.15 × 942.50
4. Step 4: Simplify right side
   1,688.55x = 2,196,150.01
5. Step 5: Solve for x
   x = 2,196,150.01/1,688.55
6. Step 6: Final answer
   x = 1,300.61