Finding the Fourth Proportional to 1,187,152.83, 1,638,089.71 and 670,718.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,187,152.83 : 1,638,089.71 = 670,718.29 : x
2. Step 2: Convert to fraction form
   1,187,152.83/1,638,089.71 = 670,718.29/x
3. Step 3: Cross multiply
   1,187,152.83x = 1,638,089.71 × 670,718.29
4. Step 4: Simplify right side
   1,187,152.83x = 1,098,696,717,613.76
5. Step 5: Solve for x
   x = 1,098,696,717,613.76/1,187,152.83
6. Step 6: Final answer
   x = 925,488.86