Finding the Fourth Proportional to 1,143,769.55, 1,578,443.96 and 690,973.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143,769.55 : 1,578,443.96 = 690,973.07 : x
2. Step 2: Convert to fraction form
   1,143,769.55/1,578,443.96 = 690,973.07/x
3. Step 3: Cross multiply
   1,143,769.55x = 1,578,443.96 × 690,973.07
4. Step 4: Simplify right side
   1,143,769.55x = 1,090,662,262,699.37
5. Step 5: Solve for x
   x = 1,090,662,262,699.37/1,143,769.55
6. Step 6: Final answer
   x = 953,568.20