Finding the Fourth Proportional to 1,931.56, 2,897.02 and 698.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.56 : 2,897.02 = 698.72 : x
2. Step 2: Convert to fraction form
   1,931.56/2,897.02 = 698.72/x
3. Step 3: Cross multiply
   1,931.56x = 2,897.02 × 698.72
4. Step 4: Simplify right side
   1,931.56x = 2,024,205.81
5. Step 5: Solve for x
   x = 2,024,205.81/1,931.56
6. Step 6: Final answer
   x = 1,047.96