Finding the Fourth Proportional to 1,374.58, 2,061.62 and 681.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.58 : 2,061.62 = 681.02 : x
2. Step 2: Convert to fraction form
   1,374.58/2,061.62 = 681.02/x
3. Step 3: Cross multiply
   1,374.58x = 2,061.62 × 681.02
4. Step 4: Simplify right side
   1,374.58x = 1,404,001.05
5. Step 5: Solve for x
   x = 1,404,001.05/1,374.58
6. Step 6: Final answer
   x = 1,021.41