Finding the Fourth Proportional to 2,666,642.98, 4,000,379.98 and 869,109.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666,642.98 : 4,000,379.98 = 869,109.40 : x
2. Step 2: Convert to fraction form
   2,666,642.98/4,000,379.98 = 869,109.40/x
3. Step 3: Cross multiply
   2,666,642.98x = 4,000,379.98 × 869,109.40
4. Step 4: Simplify right side
   2,666,642.98x = 3,476,767,844,189.81
5. Step 5: Solve for x
   x = 3,476,767,844,189.81/2,666,642.98
6. Step 6: Final answer
   x = 1,303,799.52