Finding the Fourth Proportional to 879,100.89, 1,318,888.06 and 452,404.21

Step by Step Solution

1. Step 1: Write the proportion equation
   879,100.89 : 1,318,888.06 = 452,404.21 : x
2. Step 2: Convert to fraction form
   879,100.89/1,318,888.06 = 452,404.21/x
3. Step 3: Cross multiply
   879,100.89x = 1,318,888.06 × 452,404.21
4. Step 4: Simplify right side
   879,100.89x = 596,670,506,406.45
5. Step 5: Solve for x
   x = 596,670,506,406.45/879,100.89
6. Step 6: Final answer
   x = 678,728.13