Finding the Fourth Proportional to 2,578,485, 3,558,420 and 1,432,565.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,485 : 3,558,420 = 1,432,565.34 : x
2. Step 2: Convert to fraction form
   2,578,485/3,558,420 = 1,432,565.34/x
3. Step 3: Cross multiply
   2,578,485x = 3,558,420 × 1,432,565.34
4. Step 4: Simplify right side
   2,578,485x = 5,097,669,157,162.80
5. Step 5: Solve for x
   x = 5,097,669,157,162.80/2,578,485
6. Step 6: Final answer
   x = 1,977,001.67