Finding the Fourth Proportional to 2,499,731.61, 3,749,791.80 and 817,005.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499,731.61 : 3,749,791.80 = 817,005.21 : x
2. Step 2: Convert to fraction form
   2,499,731.61/3,749,791.80 = 817,005.21/x
3. Step 3: Cross multiply
   2,499,731.61x = 3,749,791.80 × 817,005.21
4. Step 4: Simplify right side
   2,499,731.61x = 3,063,599,437,015.28
5. Step 5: Solve for x
   x = 3,063,599,437,015.28/2,499,731.61
6. Step 6: Final answer
   x = 1,225,571.35