Finding the Fourth Proportional to 1,200.90, 1,797.42 and 651.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.90 : 1,797.42 = 651.72 : x
2. Step 2: Convert to fraction form
   1,200.90/1,797.42 = 651.72/x
3. Step 3: Cross multiply
   1,200.90x = 1,797.42 × 651.72
4. Step 4: Simplify right side
   1,200.90x = 1,171,414.56
5. Step 5: Solve for x
   x = 1,171,414.56/1,200.90
6. Step 6: Final answer
   x = 975.45