Finding the Fourth Proportional to 1,506.72, 2,258.64 and 890.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,506.72 : 2,258.64 = 890.58 : x
2. Step 2: Convert to fraction form
   1,506.72/2,258.64 = 890.58/x
3. Step 3: Cross multiply
   1,506.72x = 2,258.64 × 890.58
4. Step 4: Simplify right side
   1,506.72x = 2,011,499.61
5. Step 5: Solve for x
   x = 2,011,499.61/1,506.72
6. Step 6: Final answer
   x = 1,335.02