Finding the Fourth Proportional to 1,931.45, 2,898.72 and 699.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.45 : 2,898.72 = 699.73 : x
2. Step 2: Convert to fraction form
   1,931.45/2,898.72 = 699.73/x
3. Step 3: Cross multiply
   1,931.45x = 2,898.72 × 699.73
4. Step 4: Simplify right side
   1,931.45x = 2,028,314.10
5. Step 5: Solve for x
   x = 2,028,314.10/1,931.45
6. Step 6: Final answer
   x = 1,050.15