Finding the Fourth Proportional to 1,284,404.33, 1,770,412.19 and 870,807.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284,404.33 : 1,770,412.19 = 870,807.06 : x
2. Step 2: Convert to fraction form
   1,284,404.33/1,770,412.19 = 870,807.06/x
3. Step 3: Cross multiply
   1,284,404.33x = 1,770,412.19 × 870,807.06
4. Step 4: Simplify right side
   1,284,404.33x = 1,541,687,429,808.03
5. Step 5: Solve for x
   x = 1,541,687,429,808.03/1,284,404.33
6. Step 6: Final answer
   x = 1,200,313.17