Finding the Fourth Proportional to 1,806,150.84, 2,492,516.25 and 990,429

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806,150.84 : 2,492,516.25 = 990,429 : x
2. Step 2: Convert to fraction form
   1,806,150.84/2,492,516.25 = 990,429/x
3. Step 3: Cross multiply
   1,806,150.84x = 2,492,516.25 × 990,429
4. Step 4: Simplify right side
   1,806,150.84x = 2,468,660,376,971.25
5. Step 5: Solve for x
   x = 2,468,660,376,971.25/1,806,150.84
6. Step 6: Final answer
   x = 1,366,807.42