Finding the Fourth Proportional to 1,748.48, 2,621.56 and 693.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,748.48 : 2,621.56 = 693.60 : x
2. Step 2: Convert to fraction form
   1,748.48/2,621.56 = 693.60/x
3. Step 3: Cross multiply
   1,748.48x = 2,621.56 × 693.60
4. Step 4: Simplify right side
   1,748.48x = 1,818,314.02
5. Step 5: Solve for x
   x = 1,818,314.02/1,748.48
6. Step 6: Final answer
   x = 1,039.94