Finding the Fourth Proportional to 1,806,866.57, 2,493,469.09 and 1,118,401.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806,866.57 : 2,493,469.09 = 1,118,401.31 : x
2. Step 2: Convert to fraction form
   1,806,866.57/2,493,469.09 = 1,118,401.31/x
3. Step 3: Cross multiply
   1,806,866.57x = 2,493,469.09 × 1,118,401.31
4. Step 4: Simplify right side
   1,806,866.57x = 2,788,699,096,700.51
5. Step 5: Solve for x
   x = 2,788,699,096,700.51/1,806,866.57
6. Step 6: Final answer
   x = 1,543,389.61