Finding the Fourth Proportional to 1,123.12, 1,549.72 and 651.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.12 : 1,549.72 = 651.09 : x
2. Step 2: Convert to fraction form
   1,123.12/1,549.72 = 651.09/x
3. Step 3: Cross multiply
   1,123.12x = 1,549.72 × 651.09
4. Step 4: Simplify right side
   1,123.12x = 1,009,003.94
5. Step 5: Solve for x
   x = 1,009,003.94/1,123.12
6. Step 6: Final answer
   x = 898.40