Finding the Fourth Proportional to 1,384.42, 1,911.42 and 1,296.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.42 : 1,911.42 = 1,296.26 : x
2. Step 2: Convert to fraction form
   1,384.42/1,911.42 = 1,296.26/x
3. Step 3: Cross multiply
   1,384.42x = 1,911.42 × 1,296.26
4. Step 4: Simplify right side
   1,384.42x = 2,477,697.29
5. Step 5: Solve for x
   x = 2,477,697.29/1,384.42
6. Step 6: Final answer
   x = 1,789.70