Finding the Fourth Proportional to 1,688.50, 2,535.55 and 1,043.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.50 : 2,535.55 = 1,043.34 : x
2. Step 2: Convert to fraction form
   1,688.50/2,535.55 = 1,043.34/x
3. Step 3: Cross multiply
   1,688.50x = 2,535.55 × 1,043.34
4. Step 4: Simplify right side
   1,688.50x = 2,645,440.74
5. Step 5: Solve for x
   x = 2,645,440.74/1,688.50
6. Step 6: Final answer
   x = 1,566.74