Finding the Fourth Proportional to 1,678,667.81, 2,518,978.71 and 705,962.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,667.81 : 2,518,978.71 = 705,962.21 : x
2. Step 2: Convert to fraction form
   1,678,667.81/2,518,978.71 = 705,962.21/x
3. Step 3: Cross multiply
   1,678,667.81x = 2,518,978.71 × 705,962.21
4. Step 4: Simplify right side
   1,678,667.81x = 1,778,303,777,054.55
5. Step 5: Solve for x
   x = 1,778,303,777,054.55/1,678,667.81
6. Step 6: Final answer
   x = 1,059,354.19