Finding the Fourth Proportional to 1,443,907.60, 1,991,967.01 and 870,629.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,907.60 : 1,991,967.01 = 870,629.29 : x
2. Step 2: Convert to fraction form
   1,443,907.60/1,991,967.01 = 870,629.29/x
3. Step 3: Cross multiply
   1,443,907.60x = 1,991,967.01 × 870,629.29
4. Step 4: Simplify right side
   1,443,907.60x = 1,734,264,830,116.69
5. Step 5: Solve for x
   x = 1,734,264,830,116.69/1,443,907.60
6. Step 6: Final answer
   x = 1,201,091.28