Finding the Fourth Proportional to 1,458,081.72, 2,186,373.60 and 658,930.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458,081.72 : 2,186,373.60 = 658,930.32 : x
2. Step 2: Convert to fraction form
   1,458,081.72/2,186,373.60 = 658,930.32/x
3. Step 3: Cross multiply
   1,458,081.72x = 2,186,373.60 × 658,930.32
4. Step 4: Simplify right side
   1,458,081.72x = 1,440,667,855,887.55
5. Step 5: Solve for x
   x = 1,440,667,855,887.55/1,458,081.72
6. Step 6: Final answer
   x = 988,057.00