Finding the Fourth Proportional to 2,175,780.85, 3,263,667.67 and 578,343.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175,780.85 : 3,263,667.67 = 578,343.94 : x
2. Step 2: Convert to fraction form
   2,175,780.85/3,263,667.67 = 578,343.94/x
3. Step 3: Cross multiply
   2,175,780.85x = 3,263,667.67 × 578,343.94
4. Step 4: Simplify right side
   2,175,780.85x = 1,887,522,419,118.42
5. Step 5: Solve for x
   x = 1,887,522,419,118.42/2,175,780.85
6. Step 6: Final answer
   x = 867,514.95