Finding the Fourth Proportional to 1,885.20, 2,601.72 and 1,045.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.20 : 2,601.72 = 1,045.98 : x
2. Step 2: Convert to fraction form
   1,885.20/2,601.72 = 1,045.98/x
3. Step 3: Cross multiply
   1,885.20x = 2,601.72 × 1,045.98
4. Step 4: Simplify right side
   1,885.20x = 2,721,347.09
5. Step 5: Solve for x
   x = 2,721,347.09/1,885.20
6. Step 6: Final answer
   x = 1,443.53