Finding the Fourth Proportional to 2,590,516.26, 3,886,099.91 and 1,390,789.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590,516.26 : 3,886,099.91 = 1,390,789.54 : x
2. Step 2: Convert to fraction form
   2,590,516.26/3,886,099.91 = 1,390,789.54/x
3. Step 3: Cross multiply
   2,590,516.26x = 3,886,099.91 × 1,390,789.54
4. Step 4: Simplify right side
   2,590,516.26x = 5,404,747,106,222.94
5. Step 5: Solve for x
   x = 5,404,747,106,222.94/2,590,516.26
6. Step 6: Final answer
   x = 2,086,359.07