Finding the Fourth Proportional to 2,111,311.86, 3,166,923.42 and 513,883.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111,311.86 : 3,166,923.42 = 513,883.86 : x
2. Step 2: Convert to fraction form
   2,111,311.86/3,166,923.42 = 513,883.86/x
3. Step 3: Cross multiply
   2,111,311.86x = 3,166,923.42 × 513,883.86
4. Step 4: Simplify right side
   2,111,311.86x = 1,627,430,831,394.00
5. Step 5: Solve for x
   x = 1,627,430,831,394.00/2,111,311.86
6. Step 6: Final answer
   x = 770,814.99