Finding the Fourth Proportional to 1,314.72, 1,970.46 and 698.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.72 : 1,970.46 = 698.58 : x
2. Step 2: Convert to fraction form
   1,314.72/1,970.46 = 698.58/x
3. Step 3: Cross multiply
   1,314.72x = 1,970.46 × 698.58
4. Step 4: Simplify right side
   1,314.72x = 1,376,523.95
5. Step 5: Solve for x
   x = 1,376,523.95/1,314.72
6. Step 6: Final answer
   x = 1,047.01