Finding the Fourth Proportional to 1,623.42, 2,432.82 and 698.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.42 : 2,432.82 = 698.76 : x
2. Step 2: Convert to fraction form
   1,623.42/2,432.82 = 698.76/x
3. Step 3: Cross multiply
   1,623.42x = 2,432.82 × 698.76
4. Step 4: Simplify right side
   1,623.42x = 1,699,957.30
5. Step 5: Solve for x
   x = 1,699,957.30/1,623.42
6. Step 6: Final answer
   x = 1,047.15