Finding the Fourth Proportional to 1,890.34, 2,608.83 and 1,051.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.34 : 2,608.83 = 1,051.20 : x
2. Step 2: Convert to fraction form
   1,890.34/2,608.83 = 1,051.20/x
3. Step 3: Cross multiply
   1,890.34x = 2,608.83 × 1,051.20
4. Step 4: Simplify right side
   1,890.34x = 2,742,402.10
5. Step 5: Solve for x
   x = 2,742,402.10/1,890.34
6. Step 6: Final answer
   x = 1,450.75