Finding the Fourth Proportional to 1,139,740.14, 1,564,605.18 and 978,314.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,740.14 : 1,564,605.18 = 978,314.94 : x
2. Step 2: Convert to fraction form
   1,139,740.14/1,564,605.18 = 978,314.94/x
3. Step 3: Cross multiply
   1,139,740.14x = 1,564,605.18 × 978,314.94
4. Step 4: Simplify right side
   1,139,740.14x = 1,530,676,622,795.39
5. Step 5: Solve for x
   x = 1,530,676,622,795.39/1,139,740.14
6. Step 6: Final answer
   x = 1,343,004.93