Finding the Fourth Proportional to 1,810.89, 2,499.30 and 1,064.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.89 : 2,499.30 = 1,064.88 : x
2. Step 2: Convert to fraction form
   1,810.89/2,499.30 = 1,064.88/x
3. Step 3: Cross multiply
   1,810.89x = 2,499.30 × 1,064.88
4. Step 4: Simplify right side
   1,810.89x = 2,661,454.58
5. Step 5: Solve for x
   x = 2,661,454.58/1,810.89
6. Step 6: Final answer
   x = 1,469.69