Finding the Fourth Proportional to 830,618.91, 1,244,118.69 and 545,988.15

Step by Step Solution

1. Step 1: Write the proportion equation
   830,618.91 : 1,244,118.69 = 545,988.15 : x
2. Step 2: Convert to fraction form
   830,618.91/1,244,118.69 = 545,988.15/x
3. Step 3: Cross multiply
   830,618.91x = 1,244,118.69 × 545,988.15
4. Step 4: Simplify right side
   830,618.91x = 679,274,061,933.52
5. Step 5: Solve for x
   x = 679,274,061,933.52/830,618.91
6. Step 6: Final answer
   x = 817,792.68