Finding the Fourth Proportional to 1,443,923.36, 1,991,988.59 and 870,645.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,923.36 : 1,991,988.59 = 870,645.05 : x
2. Step 2: Convert to fraction form
   1,443,923.36/1,991,988.59 = 870,645.05/x
3. Step 3: Cross multiply
   1,443,923.36x = 1,991,988.59 × 870,645.05
4. Step 4: Simplify right side
   1,443,923.36x = 1,734,314,998,696.77
5. Step 5: Solve for x
   x = 1,734,314,998,696.77/1,443,923.36
6. Step 6: Final answer
   x = 1,201,112.92