Finding the Fourth Proportional to 1,433,925.37, 1,978,842.18 and 780,570.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433,925.37 : 1,978,842.18 = 780,570.18 : x
2. Step 2: Convert to fraction form
   1,433,925.37/1,978,842.18 = 780,570.18/x
3. Step 3: Cross multiply
   1,433,925.37x = 1,978,842.18 × 780,570.18
4. Step 4: Simplify right side
   1,433,925.37x = 1,544,625,196,634.19
5. Step 5: Solve for x
   x = 1,544,625,196,634.19/1,433,925.37
6. Step 6: Final answer
   x = 1,077,200.55