Finding the Fourth Proportional to 1,424,100.83, 2,136,149.08 and 426,828.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424,100.83 : 2,136,149.08 = 426,828.83 : x
2. Step 2: Convert to fraction form
   1,424,100.83/2,136,149.08 = 426,828.83/x
3. Step 3: Cross multiply
   1,424,100.83x = 2,136,149.08 × 426,828.83
4. Step 4: Simplify right side
   1,424,100.83x = 911,770,012,521.98
5. Step 5: Solve for x
   x = 911,770,012,521.98/1,424,100.83
6. Step 6: Final answer
   x = 640,242.60