Finding the Fourth Proportional to 3,870,574.72, 5,805,730.59 and 991,969.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870,574.72 : 5,805,730.59 = 991,969.80 : x
2. Step 2: Convert to fraction form
   3,870,574.72/5,805,730.59 = 991,969.80/x
3. Step 3: Cross multiply
   3,870,574.72x = 5,805,730.59 × 991,969.80
4. Step 4: Simplify right side
   3,870,574.72x = 5,759,109,433,823.53
5. Step 5: Solve for x
   x = 5,759,109,433,823.53/3,870,574.72
6. Step 6: Final answer
   x = 1,487,921.01