Finding the Fourth Proportional to 1,189,123.12, 1,640,881.38 and 705,604.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,123.12 : 1,640,881.38 = 705,604.96 : x
2. Step 2: Convert to fraction form
   1,189,123.12/1,640,881.38 = 705,604.96/x
3. Step 3: Cross multiply
   1,189,123.12x = 1,640,881.38 × 705,604.96
4. Step 4: Simplify right side
   1,189,123.12x = 1,157,814,040,499.64
5. Step 5: Solve for x
   x = 1,157,814,040,499.64/1,189,123.12
6. Step 6: Final answer
   x = 973,670.45