Finding the Fourth Proportional to 2,138,513.86, 3,209,017.38 and 791,613.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,513.86 : 3,209,017.38 = 791,613.46 : x
2. Step 2: Convert to fraction form
   2,138,513.86/3,209,017.38 = 791,613.46/x
3. Step 3: Cross multiply
   2,138,513.86x = 3,209,017.38 × 791,613.46
4. Step 4: Simplify right side
   2,138,513.86x = 2,540,301,351,381.93
5. Step 5: Solve for x
   x = 2,540,301,351,381.93/2,138,513.86
6. Step 6: Final answer
   x = 1,187,881.64