Finding the Fourth Proportional to 2,905,858.64, 4,359,768.88 and 1,286,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,905,858.64 : 4,359,768.88 = 1,286,404.10 : x
2. Step 2: Convert to fraction form
   2,905,858.64/4,359,768.88 = 1,286,404.10/x
3. Step 3: Cross multiply
   2,905,858.64x = 4,359,768.88 × 1,286,404.10
4. Step 4: Simplify right side
   2,905,858.64x = 5,608,424,562,284.41
5. Step 5: Solve for x
   x = 5,608,424,562,284.41/2,905,858.64
6. Step 6: Final answer
   x = 1,930,040.40