Finding the Fourth Proportional to 1,890.58, 2,609.15 and 1,051.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.58 : 2,609.15 = 1,051.35 : x
2. Step 2: Convert to fraction form
   1,890.58/2,609.15 = 1,051.35/x
3. Step 3: Cross multiply
   1,890.58x = 2,609.15 × 1,051.35
4. Step 4: Simplify right side
   1,890.58x = 2,743,131.12
5. Step 5: Solve for x
   x = 2,743,131.12/1,890.58
6. Step 6: Final answer
   x = 1,450.95