Finding the Fourth Proportional to 3,131,989.98, 4,698,012.71 and 1,238,731.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131,989.98 : 4,698,012.71 = 1,238,731.62 : x
2. Step 2: Convert to fraction form
   3,131,989.98/4,698,012.71 = 1,238,731.62/x
3. Step 3: Cross multiply
   3,131,989.98x = 4,698,012.71 × 1,238,731.62
4. Step 4: Simplify right side
   3,131,989.98x = 5,819,576,895,038.89
5. Step 5: Solve for x
   x = 5,819,576,895,038.89/3,131,989.98
6. Step 6: Final answer
   x = 1,858,108.40