Finding the Fourth Proportional to 1,601,139.41, 2,210,533.41 and 990,111.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601,139.41 : 2,210,533.41 = 990,111.43 : x
2. Step 2: Convert to fraction form
   1,601,139.41/2,210,533.41 = 990,111.43/x
3. Step 3: Cross multiply
   1,601,139.41x = 2,210,533.41 × 990,111.43
4. Step 4: Simplify right side
   1,601,139.41x = 2,188,674,379,634.65
5. Step 5: Solve for x
   x = 2,188,674,379,634.65/1,601,139.41
6. Step 6: Final answer
   x = 1,366,948.05