Finding the Fourth Proportional to 1,521,978.94, 2,099,319.37 and 978,801.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521,978.94 : 2,099,319.37 = 978,801.85 : x
2. Step 2: Convert to fraction form
   1,521,978.94/2,099,319.37 = 978,801.85/x
3. Step 3: Cross multiply
   1,521,978.94x = 2,099,319.37 × 978,801.85
4. Step 4: Simplify right side
   1,521,978.94x = 2,054,817,683,096.83
5. Step 5: Solve for x
   x = 2,054,817,683,096.83/1,521,978.94
6. Step 6: Final answer
   x = 1,350,096.00