Finding the Fourth Proportional to 1,140,141.57, 1,706,802.80 and 689,498.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,141.57 : 1,706,802.80 = 689,498.61 : x
2. Step 2: Convert to fraction form
   1,140,141.57/1,706,802.80 = 689,498.61/x
3. Step 3: Cross multiply
   1,140,141.57x = 1,706,802.80 × 689,498.61
4. Step 4: Simplify right side
   1,140,141.57x = 1,176,838,154,696.62
5. Step 5: Solve for x
   x = 1,176,838,154,696.62/1,140,141.57
6. Step 6: Final answer
   x = 1,032,185.99