Finding the Fourth Proportional to 1,890.32, 2,609.06 and 1,051.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.32 : 2,609.06 = 1,051.31 : x
2. Step 2: Convert to fraction form
   1,890.32/2,609.06 = 1,051.31/x
3. Step 3: Cross multiply
   1,890.32x = 2,609.06 × 1,051.31
4. Step 4: Simplify right side
   1,890.32x = 2,742,932.13
5. Step 5: Solve for x
   x = 2,742,932.13/1,890.32
6. Step 6: Final answer
   x = 1,451.05