Finding the Fourth Proportional to 1,688.72, 2,332.60 and 1,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.72 : 2,332.60 = 1,300.56 : x
2. Step 2: Convert to fraction form
   1,688.72/2,332.60 = 1,300.56/x
3. Step 3: Cross multiply
   1,688.72x = 2,332.60 × 1,300.56
4. Step 4: Simplify right side
   1,688.72x = 3,033,686.26
5. Step 5: Solve for x
   x = 3,033,686.26/1,688.72
6. Step 6: Final answer
   x = 1,796.44