Finding the Fourth Proportional to 1,140,974.69, 1,712,322.86 and 780,283.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,974.69 : 1,712,322.86 = 780,283.71 : x
2. Step 2: Convert to fraction form
   1,140,974.69/1,712,322.86 = 780,283.71/x
3. Step 3: Cross multiply
   1,140,974.69x = 1,712,322.86 × 780,283.71
4. Step 4: Simplify right side
   1,140,974.69x = 1,336,097,630,017.19
5. Step 5: Solve for x
   x = 1,336,097,630,017.19/1,140,974.69
6. Step 6: Final answer
   x = 1,171,014.26