Finding the Fourth Proportional to 1,456,242.61, 2,184,362.76 and 391,284.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456,242.61 : 2,184,362.76 = 391,284.67 : x
2. Step 2: Convert to fraction form
   1,456,242.61/2,184,362.76 = 391,284.67/x
3. Step 3: Cross multiply
   1,456,242.61x = 2,184,362.76 × 391,284.67
4. Step 4: Simplify right side
   1,456,242.61x = 854,707,661,706.89
5. Step 5: Solve for x
   x = 854,707,661,706.89/1,456,242.61
6. Step 6: Final answer
   x = 586,926.69