Finding the Fourth Proportional to 1,878,061.02, 2,817,121.23 and 458,143.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,878,061.02 : 2,817,121.23 = 458,143.98 : x
2. Step 2: Convert to fraction form
   1,878,061.02/2,817,121.23 = 458,143.98/x
3. Step 3: Cross multiply
   1,878,061.02x = 2,817,121.23 × 458,143.98
4. Step 4: Simplify right side
   1,878,061.02x = 1,290,647,132,454.70
5. Step 5: Solve for x
   x = 1,290,647,132,454.70/1,878,061.02
6. Step 6: Final answer
   x = 687,223.22